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119results about How to "Improve simulation accuracy" patented technology

Method and equipment for predicting external characteristics of flow battery

The invention discloses a flow battery external characteristic prediction method and equipment. The method comprises the following steps: constructing an equivalent circuit model and a thermal model of an all-vanadium flow battery; calculating equivalent circuit parameters of the equivalent circuit model according to the initial electrolyte temperature and the initial vanadium ion concentration of each valence state; calculating battery output voltage and electric power at the current moment according to the equivalent circuit parameters and the charging and discharging current; inputting the environment temperature and the electric power at the current moment and the pump power of the circulating pump into a thermal model, and solving the temperature of the galvanic pile electrolyte at the next moment; inputting the stack electrolyte temperature at the next moment into the dynamic differential equation of the vanadium ion concentration to obtain the vanadium ion concentration at the next moment; the electrolyte temperature and the vanadium ion concentration at the next moment are fed back to the equivalent circuit model, loop iteration is conducted till the battery charging and discharging process reaches a steady state, and the output voltage and the stack electrolyte temperature of the flow battery at each moment in the charging and discharging process are obtained. The computing resources are reduced, and the prediction accuracy is improved.
Owner:DALIAN UNIV OF TECH +1

Bionic artificial stomach device based on electrostatic hydraulic drive and application thereof

The application provides a kind of bionic artificial stomach device based on electrostatic hydraulic drive and its application, belong to bionic medical instrument technical field.The device includes flexible bionic stomach cavity, composite peristaltic wave drive module including multiple electrostatic hydraulic drive units and programmable control module.Programmable control module applies high voltage electric signal to each electrostatic hydraulic drive unit according to preset timing, drive flexible bionic stomach cavity outer wall to produce continuous, distributed surface contraction deformation, to form annular advancing peristaltic wave propagating from fundus to antrum.The application realizes continuous surface driving of flexible interface through electrostatic hydraulic effect, solves the problem of unreasonable contact mode, discontinuous peristalsis and mechanical distortion in the prior art, improves the physiological relevance of in-vitro simulation of gastric mechanics, digestion process and drug transport.
Owner:WUHAN TEXTILE UNIV

Coastal typhoon wave refined simulation method based on terrain adaptive grid and parameter dynamic correction

The invention relates to the technical field of marine environment numerical simulation, in particular to a near-shore typhoon wave refined simulation method based on terrain adaptive grids and parameter dynamic correction, and the method comprises the steps: obtaining basic data and simulation parameters of a target sea area, constructing a computational domain and an initial grid, and constructing a target sea area; the initial grid is an unstructured grid fused with multiple physical constraint factors; performing optimization processing on the initial grid based on a numerical stability criterion to obtain a final calculation grid meeting a calculation convergence requirement; establishing a bidirectional coupling model, and applying the final computational grid to the bidirectional coupling model; carrying out localization iteration calibration on key physical parameters of the bidirectional coupling model to obtain an optimal parameter set; and carrying out typhoon wave process simulation calculation and constructing a typhoon wave feature database by utilizing the final calculation grid and the optimal parameter set, and realizing high-precision simulation and prediction of the typhoon wave process by constructing an adaptive optimization grid, a bidirectional coupling model and a parameter localization calibration mechanism.
Owner:FUJIAN YONGFU POWER ENG

Urban infrastructure-based flood simulation method and device thereof

The application discloses a flood simulation method based on urban infrastructure and a device thereof, and the method comprises the following steps: collecting street view images of a city, wherein the street view images comprise street view data collected from different urban infrastructures at different angles and different times; classifying and processing the street view data according to the types of the infrastructures, and extracting urban infrastructure data; fusing the infrastructure data and terrain data of the city to obtain fused terrain data of the city; dividing catchment areas of the city based on the fused terrain data and extracting water system data, and establishing a flood simulation model based on urban infrastructure according to the water system data, so that the influence of urban street networks, fence systems, buildings and other infrastructures on urban flood processes is fully considered, the simulation accuracy of a city rainstorm flood model is improved, and urban flood disasters are reduced.
Owner:URBAN PLANNING & DESIGN INST OF SHENZHEN UPDIS

Optical load real-mounted digital twinborn simulation system

The invention relates to an optical load real-installation digital twinning simulation system, which belongs to the technical field of digital twinning and comprises a satellite digital virtual body, an external interface module and an optical load full-digital virtual simulation platform, the simulation platform further comprises an ultra-high-line-frequency low-crosstalk comprehensive electronic module, a mechanism control module, an optical camera imaging simulation module and a focal plane data processing module. The system receives telemetry data and real shot images of an entity satellite, and performs instruction solution, mechanism motion simulation and full-link optical imaging simulation in a simulation platform to generate a virtual degraded image; performing online imaging quality comparison on the virtual degraded image and the real shot image through a focal plane data processing module, and identifying and correcting parameters of the digital twin model according to the online imaging quality comparison; and finally, the corrected model parameters are fed back to the entity satellite, so that the satellite images the ground object target again according to the plan. According to the invention, high-precision virtual-real twinning of the satellite camera is realized, so that the image quality of the satellite camera is higher.
Owner:CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI

A sintering machine operation and maintenance strategy simulation test and optimization method and system based on digital twinning

PendingCN122595819AImprove simulation accuracyReduce decision risk
The application discloses a sintering machine operation and maintenance strategy simulation test and optimization method and system based on digital twinning, relates to the technical field of sintering intelligent operation and maintenance, and comprises the following steps: a simulation environment is constructed; real-time operation data of equipment is acquired, the real-time operation data of the equipment is mapped into a current equipment state snapshot through a digital twinning platform, and the current equipment state snapshot is converted into an initial current state vector; an operation and maintenance strategy to be tested is packaged into a decision function module and dynamically linked to the simulation environment; a simulation engine of the simulation environment is called, each single-strategy simulation deduction cycle in the operation and maintenance strategy is executed step by step with the initial current state vector as a starting point; a state trajectory, an action sequence and an event log are recorded; and a single-strategy comprehensive performance score corresponding to each single strategy is calculated. The method solves the technical problems that in the prior art, an operation and maintenance strategy lacks simulation verification, is directly put into production, results in high trial-and-error cost, and strategy reliability cannot be quantitatively evaluated.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD +1

High-speed printed circuit board differential pair transmission path equal-length matching optimization method

The invention discloses an equal-length matching optimization method for differential pair transmission paths of a high-speed printed circuit board, and belongs to the technical field of signal integrity modeling and simulation. Comprising the following steps: constructing a multi-conductor transmission line model containing a reference conductor, extracting a parameter matrix per unit length, judging the uniformity and symmetry of a structure, and introducing a local modal substrate and a continuous modal coupling term which change along with space for describing modal conversion caused by gradual change of the structure, the propagation delay inequality of the two signal paths is calculated, a phase calibration operator is constructed, modal conversion and the delay mismatch effect are brought into a unified propagation equation to be solved, the phase calibration operator is applied at a recoupling reference plane to carry out alignment processing on voltage and current, and finally equivalent differential mode impedance is obtained through calculation. According to the method, integrated modeling is carried out by integrating the joint effect of mode conversion and time delay mismatch, and the impedance simulation precision of the difference pair snake-shaped compensation structure recoupling region is remarkably improved.
Owner:UNIV OF JINAN +1

Numerical Simulation Method for End-Anchored Rock Mass Engineering Based on DDDA

ActiveCN121413336BAccurately predict deformation and failure behaviorImprove adaptabilityRock engineeringNumerical models
This invention relates to the fields of computational mechanics and rock engineering, and particularly to a numerical simulation method for end-anchored rock mass engineering based on DDDA (Digital Directed Amplification and Analysis). The method includes: constructing a circular element discontinuous deformation analysis numerical model according to actual engineering conditions; performing discontinuous deformation analysis numerical calculations; analyzing the calculation results of the unanchored model to preliminarily determine the anchoring scheme; performing discontinuous deformation analysis numerical calculations again; determining whether the model contains unstable blocks, adjusting the anchoring scheme, and repeating the aforementioned steps until the model stabilizes, thus completing the design of the rock mass engineering anchoring scheme. This invention establishes a numerical simulation method capable of accurately simulating the interaction between anchor bolts (anchor cables) and rock mass, and integrating anchoring scheme design, stability assessment, and dynamic parameter optimization functions. It achieves accurate prediction of the deformation and failure behavior of anchored rock mass and optimizes anchoring design, featuring high simulation accuracy and strong practicality.
Owner:CENT SOUTH UNIV

Three-dimensional FDTD metal conformal stabilization simulation method

The invention discloses a three-dimensional FDTD metal conformal stabilization simulation method. The method comprises the steps of grid construction and boundary identification, effective electromagnetic parameter calculation, stability condition pre-verification, field quantity iteration updating and boundary condition convergence judgment. According to the method, high-precision and high-stability electromagnetic simulation of a complex medium boundary and a metal boundary is realized by combining an integral form of the effective dielectric constant and the magnetic conductivity, a posterior weighted stabilization strategy and a strict integral updating rule of the metal boundary, meanwhile, the robustness of an algorithm to a time step length is improved, and the practical application scene of the method is expanded.
Owner:SHANGHAI JIUTONGFANG TECHNOLOGY CO LTD

A method for numerical simulation of particle transport based on micro-visualization of micro-cores

PendingCN122591712Aachieve sheddingImplement detailed description
The application discloses a kind of micro-particle migration numerical simulation methods based on microcosmic core visualization, including the following steps, based on loose sandstone reservoir core, micron CT online flow rate driving displacement scanning experiment is carried out, and experimental results are obtained;Analysis of experimental results determines the key parameters required for micro-particle migration numerical simulation;Key parameters are used to construct a core numerical simulation model, and the core experiment displacement process is fitted;Establish a field scale numerical simulation model, and fit the production history.The application realizes the fine description of the reservoir particle shedding, migration and aggregation process by means of visual core experiment combined with numerical simulation, improves the accuracy of field numerical simulation, improves the injection-production optimization effect of oilfield, and provides guidance for sand control well management.
Owner:CNOOC ENERGY TECHNOLOGY & SERVICES LTD

A full-size drill-grinding-milling tool high-precision dynamic simulation analysis method based on an adaptive FEM-SPH coupling algorithm

PendingCN122287201ARealize the simulation functionrestore accuratelyBatch processingModel reconstruction
This invention relates to the technical field of simulation analysis methods for downhole tools in oil and gas fields, and discloses a high-precision dynamic simulation analysis method for full-size drilling and milling tools based on an adaptive FEM-SPH coupled algorithm. The method includes three processes: model establishment, model solving, and performance evaluation. The first process is model establishment, which involves obtaining the geometric model of the drilling and milling tool through model reconstruction technology, and establishing a high-precision dynamic simulation analysis model for the full-size drilling and milling tool based on a wear prediction model and the adaptive SPH-FEM coupled algorithm. The second process is model solving, which involves solving the model after successively changing the drilling pressure and rotational speed, and batch processing the simulation results using Python. The third process is performance evaluation, which evaluates the performance of the drilling and milling tool from three aspects: efficiency, safety, and lifespan. This invention improves simulation accuracy from three aspects: geometric modeling, wear simulation, and solution algorithm, and evaluates the performance of the drilling and milling tool from three aspects: efficiency, safety, and lifespan.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

A large eddy simulation-based atmospheric flow field reconstruction method

The application relates to a large eddy simulation-based atmospheric flow field reconstruction method, which comprises the following steps: acquiring turbulent flow data of a target region and performing normalization processing; inputting the normalized turbulent flow data into a resolution promotion module to extract high-resolution time characteristics and predict time characteristics at the next moment, and acquiring reconstructed high-resolution data, wherein the resolution promotion module is obtained through training of turbulent flow data and corresponding resolution-promoted turbulent flow data; performing numerical simulation on the reconstructed high-resolution data by using a large eddy simulation model to construct a multi-layer resolution grid structure; and if the resolution accuracy of a local region in the multi-layer resolution grid structure is lower than a preset threshold, adjusting the grid density through an adaptive grid refinement technique to acquire a three-dimensional atmospheric flow field reconstruction result. The application improves the accuracy and time continuity of flow field simulation under complex terrain.
Owner:INST OF ATMOSPHERIC PHYSICS CHINESE ACADEMY SCI

A method for simulating buckling of subsea pipelines based on the pipeline element method

This invention provides a method for simulating buckling of subsea pipelines based on the pipeline element method, addressing the problems of low computational efficiency, complex modeling, and low accuracy in existing methods. Based on Euler-Bernoulli beam theory, this invention models the pipeline as a series of efficient pipeline elements. Internal pressure is converted into equivalent temperature rise, and the effective thermal expansion force generated by the effective temperature rise is applied to both ends of the pipeline element to construct the total potential energy equation. The second derivative of the total potential energy equation is performed to obtain the tangent stiffness matrix of the pipeline element. An updated Lagrange method is used for coordinate transformation. The secant relationship is used to calculate the pipeline element and soil resistance. A Newton-Raphson incremental-iterative numerical program is established to perform nonlinear analysis of the pipeline, progressively solving for the deformation and stress of the pipeline under complex loads. This invention significantly reduces the number of elements, improves computational efficiency, and accurately simulates nonlinear pipe-soil interactions. It is applicable to various pipelines, including short pipes, long pipes, and corroded pipes, as well as complex working conditions such as high temperature and high pressure.
Owner:SUN YAT SEN UNIV +1

Gas-solid interaction scattering kernel model modeling method based on corrected characteristic temperature

The invention discloses a gas-solid interaction scattering nuclear model modeling method based on a corrected characteristic temperature, and the method comprises the steps: determining the average incident energy according to the macroscopic temperature and macroscopic speed of incident gas; calculating tangential and normal energy adaptation coefficients and a total energy adaptation coefficient according to given tangential and normal momentum adaptation coefficients; constructing a gas reflection temperature based on the average incident energy, the wall surface temperature and the total energy adaptation coefficient; calculating tangential correction characteristic temperature according to the reflection temperature and the tangential momentum adaptation coefficient; calculating a normal correction characteristic temperature according to the reflection temperature and the normal momentum adaptation coefficient; and respectively replacing the wall surface temperatures of the tangential and normal scattering nuclei of the original CLL model with the tangential and normal corrected characteristic temperatures to obtain a gas-solid interaction scattering nucleus model based on the corrected characteristic temperatures. According to the method, the characteristic temperature of the original CLL model is corrected according to the incoming flow parameters on the premise that the number of adjustable parameters is not increased, and the simulation precision of the gas scattering behavior is improved.
Owner:HANGZHOU DIANZI UNIV +1

Axial flux motor NVH simulation analysis method and system

PendingCN122508806AImprove simulation accuracyOvercoming excitation distortion problemsElement modelElectric machine
The application discloses an NVH simulation analysis method and system of an axial flux motor, and relates to the technical field of motor NVH simulation.The method provided by the application comprises the following steps: a three-dimensional finite element model of the axial flux motor is established; a three-dimensional electromagnetic model comprising at least one periodic structural unit is established; first node electromagnetic excitation of a first stator on the periodic structural unit is extracted based on the three-dimensional electromagnetic model; complete electromagnetic excitation covering the first stator and a second stator is generated and loaded to the three-dimensional finite element model by performing spatial transformation on the first node electromagnetic excitation, including a rotation replication operation based on circumferential periodicity and a symmetric mapping operation based on double-stator symmetry; and finally, coupling calculation is performed to obtain NVH response parameters.The application significantly improves the accuracy of simulation analysis by using an accurate excitation loading mode, and provides a reliable basis for the optimization of the NVH performance of the motor.
Owner:ZHIXIN TECH CO LTD

Converter small-step real-time simulation device and method based on per unit fixed-point reconfigurable state space solution core

The invention discloses a converter FPGA (Field Programmable Gate Array) small-step real-time simulation device and method based on a per unit fixed-point reconfigurable state space solution core. The upper computer processing unit carries out per-unit processing on converter model parameters according to the per-unit reference of the introduced margin coefficient, discretization and fixed-point word length configuration are completed under the preset step length, and a discrete fixed-point matrix coefficient table is generated for different switch / topology states and is downloaded to the FPGA. A universal fixed-point matrix operation array is arranged in the FPGA simulation unit, a pre-stored matrix coefficient is called according to a switch combination index obtained through real-time analysis during operation, and per unit fixed-point state updating and output inverse per unit are completed in a fixed time sequence prediction; therefore, on-line reconstruction and small-step real-time simulation of topology and parameters of the converter are realized under the condition that the FPGA bit stream is not updated.
Owner:SOUTHEAST UNIV +1

Parallel flow channel heat exchanger flow distribution simulation method based on general flow resistance model

The invention discloses a parallel flow channel heat exchanger flow distribution simulation method based on a general flow resistance model. The method comprises the following steps: 1, a single-channel general flow resistance model construction stage: creating a general flow resistance model; carrying out single-channel fine modeling and simulation; acquiring pressure drop-flow velocity data; fitting to determine a flow resistance coefficient; 2, a whole machine flow distribution simulation stage: constructing a whole machine simulation model: establishing a three-dimensional geometric model of a macroscopic flow channel system of a target heat exchanger, performing grid division to obtain a macroscopic flow channel CFD model, abstracting all parallel micro-channels of a core heat exchange section of the target heat exchanger into a parallel flow resistance network consisting of a large number of flow resistance elements, each flow resistance element is endowed with a universal flow resistance model which is determined in the first stage and has a specific flow resistance coefficient; coupling solution is carried out, an iteration process is established, the error between the driving pressure difference of each flow resistance element and the pressure drop calculated according to the general flow resistance model is smaller than a preset threshold value, and iteration convergence is carried out; and outputting a flow distribution result of all parallel flow channels of the whole target heat exchanger.
Owner:SHANGHAI JIDING INFORMATION TECH CO LTD

Underground water pollution migration simulation method and device, electronic equipment and storage medium

The invention belongs to the technical field of underground water numerical simulation, and provides an underground water pollution migration simulation method and device, electronic equipment and a storage medium, and the method comprises the steps: constructing a three-dimensional octree grid, a control equation and a definite solution condition of a hydrogeological structure of a target region; carrying out discrete solution on the control equation in the three-dimensional octree grid by adopting a finite volume method taking a node as a center; constructing a post-processing approximation function and a local posterior error indicator on octree leaf subunits of the three-dimensional octree grid; determining a unit set contributed by a global error by adopting a Drfler marking strategy, then performing splitting or merging operation on leaf units, and performing grid updating by adopting a high-order interpolation or volume weighted average method; and according to a preset simulation termination condition, repeatedly executing underground water pollution migration simulation and finally performing visual display. According to the method, the simulation accuracy of water pollution migration is improved in a posterior error estimation mode.
Owner:CENT SOUTH UNIV

Assembly type electromechanical facility linkage method based on digital configuration and BIM mapping

PendingCN121956751AAutomatically detect inconsistenciesAutomatically discover and quantify inconsistenciesProgramme controlComputer controlOptimal decisionGlobal risk
The invention belongs to the technical field of computer data processing and automatic control, and particularly discloses and provides a digital configuration and BIM (Building Information Modeling) mapping fabricated electromechanical facility linkage method, which comprises the following steps of: analyzing a building information model and digital configuration, and constructing an initial weighted mapping network; initial virtual pressure of each node is calculated, conduction and superposition of the pressure in the network are iteratively simulated, and a dynamic pressure distribution diagram representing global risks is generated; and when an anomaly is detected, reverse tracing is carried out along a path with the maximum pressure contribution degree gradient so as to locate a risk source. Furthermore, various candidate control strategies are deduced through simulation, scoring is carried out from multiple dimensions, and the optimal strategy is selected. In addition, by comparing simulation and actual execution effects, deviation data is utilized to adaptively optimize the weighted mapping network and simulation model parameters. According to the method, accurate prediction, rapid traceability, optimal decision and continuous self-learning of the risk of the complex facility system are realized, and the intelligence and reliability of operation and maintenance are improved.
Owner:SHANXI INSTALLATION GRP CO LTD

A high-temperature fractured rock mass permeability simulation method under multi-field coupling

ActiveCN121351430BAchieve refinementImplement parametric representationDesign optimisation/simulationData setNetwork generation
The application discloses a high-temperature fractured rock mass permeability simulation method under multi-field coupling, and relates to the technical field of geotechnical engineering, which comprises the following steps: building an initial fracture network according to structured data sets, assembling an HTMC variable parameter operator library and establishing operator selection and weighting rules to form a multi-field coupling model package; in the multi-field coupling model package, calling the HTMC variable parameter operator library according to a multi-field state quantity vector to obtain a multi-field solution, calculating a fracture connectivity criterion and a threshold, forming an event trigger quantity, and summarizing the multi-field solution and the event trigger quantity into a field solution trigger quantity; determining an event trigger state in the fracture network according to the field solution trigger quantity, executing local reconstruction, updating the fracture network, generating a new fracture network and local parameter change information, and obtaining a network parameter change package; and the application realizes real-time perception and adaptive update of dynamic changes of fracture network connectivity, and enhances simulation timeliness and prediction reliability.
Owner:CHINA UNIV OF MINING & TECH

Methods, apparatus, media, and program products for lithography modeling

A method, device, medium and program product for lithography modeling are provided. The method comprises: determining graphic feature information corresponding to at least one region in a design pattern, the graphic feature information indicating a graphic width and a graphic pitch in the corresponding region; determining mask bias information corresponding to the at least one region based on the graphic feature information; generating a mask image corresponding to the design pattern based on the mask bias information corresponding to the at least one region; and performing lithography modeling based on the mask image.
Owner:QUANXIN INTELLIGENT MFG TECH CO LTD

Arc resistance simulation verification method for de-excitation switch structure and operating characteristics and related device

PendingCN121881707AEffective guidance for breaking capacity verificationOvercoming the problem of insufficient simulation accuracyGeometric CADDesign optimisation/simulationMathematical modelDynamic equation
The invention discloses an arc resistance simulation verification method for a field suppression switch structure and operating characteristics, an arc resistance simulation verification device for the field suppression switch structure and operating characteristics, arc resistance simulation verification equipment and a computer readable storage medium. The method comprises the following steps: firstly, establishing a three-dimensional geometric model comprising an arc extinguish chamber, a contact system and an operating mechanism; then, constructing a mechanical structure dynamic simulation model to obtain the motion characteristics of the moving contact, and finally, establishing a multi-physical field coupling mathematical model based on a fluid dynamic equation, an electromagnetic field equation and a heat transfer equation to realize numerical simulation of the arc breaking process of the field suppression switch. According to the method, the flowing, electromagnetic and heat transfer characteristics of the arc are comprehensively considered, the whole process from generation to extinguishing of the arc can be completely simulated, and an effective simulation analysis means is provided for design optimization, performance evaluation and breaking capacity verification of the field suppression switch.
Owner:MAINTENANCE CO STATE GRID QINGHAI ELECTRIC POWER +2

Hydroelectric water flow simulation method and system based on digital twinning

InactiveCN121859777AAccurately assess complexityAccurately assess instabilityDesign optimisation/simulationAdaptive optimizationWater flow
The invention relates to the technical field of hydropower station data processing, in particular to a hydropower flow simulation method and system based on digital twinning, and the method comprises the steps: analyzing the distance between any two data points in a cluster where a data point corresponding to a main frequency is located, and the energy and local density corresponding to each data point, so as to determine the energy intensity; the water flow fluctuation degree is determined by analyzing the water flow speed at any moment within the preset duration before each moment, the difference between the water flow speed at any moment and the water flow speed at the adjacent previous moment, and the energy intensity; and by analyzing the dispersion degree of the angles between the tangent vector of each grid and the tangent vectors of all adjacent grids and the similarity of the tangent vectors, determining the disordering degree of the tangent vectors, and optimizing the grid size in combination with the water flow fluctuation degree. According to the method, the precision and efficiency of hydroelectric flow simulation are improved by adaptively optimizing the grid size.
Owner:ZHIJIEYUNFU (DALIAN) INFORMATION TECH CO LTD

A Downscaling Optimization Method for Mountain Wind Fields Based on High-Precision Simulation

ActiveCN121525592BIncrease sampling densityImprove characterization accuracyDesign optimisation/simulationICT adaptation
This invention discloses a downscaling optimization method for mountain wind fields based on high-precision simulation, belonging to the field of meteorological numerical simulation technology. The method includes acquiring topographic elevation data and meteorological monitoring data of the target mountain area; identifying abrupt slope changes and constructing a spiral sampling path; calculating aspect variation values ​​to determine the sampling point spacing and generate target sampling data; performing orthogonal decomposition on the sampling data to obtain frequency components; calculating the surface wave coefficient to construct boundary perturbation equations to obtain surface stress distribution; calculating airflow motion state based on surface stress distribution; solving the vorticity equation to obtain vorticity characteristics of the leeward region and calculating airflow motion correction parameters; and performing downscaling iterative calculations with the meteorological monitoring data to generate target area wind field data with a spatial resolution of hundreds of meters. This invention improves the simulation accuracy of local wind fields under complex terrain conditions.
Owner:LANZHOU UNIV

Microgravity simulation device for ground test of spacecraft component

The invention belongs to the technical field of spacecraft ground test equipment, and particularly relates to a microgravity simulation device for spacecraft component ground test, which comprises a base, an air floatation support mechanism, an ultrasonic standing wave stabilization mechanism, a self-adaptive clamping mechanism, a servo drive error compensation mechanism, a control system and a test platform. The air floatation supporting mechanism provides vertical non-contact supporting force to offset gravity, the ultrasonic stabilizing mechanism maintains horizontal stability, the self-adaptive clamping mechanism is adaptive to parts of multiple sizes, and the servo compensation mechanism corrects deviation in real time. The composite suspension structure is combined with PID-fuzzy closed-loop control, the simulation error is controlled within 4.0%, the defects that existing equipment is low in precision, short in time, prone to pollution and poor in universality are overcome, long-time stable simulation can be achieved, and reliable support is provided for part ground verification.
Owner:TIANJIN YIHENG ELECTROMECHANICAL ENG CO LTD

Parallel simulation method and system for large-scale multi-modal traffic based on cpu and gpu

The application discloses a large-scale multi-mode traffic parallel simulation method and system based on CPU and GPU, relates to the technical field of traffic control, and comprises the following steps: acquiring traffic road networks to be simulated and multi-mode traffic demand data, dividing the traffic road networks to be simulated and the multi-mode traffic demand data based on a preset dynamic spectrum division algorithm to obtain a multi-mode traffic network division result; performing dynamic congestion detection and information feedback processing on the multi-mode traffic network division result based on a preset cross-process congestion feedback algorithm and an MPI communication optimization strategy to obtain congestion state information; inputting the congestion state information into a pre-established microscopic traffic intelligent agent model to perform microscopic behavior parallel calculation, and outputting microscopic behavior data based on the limitation of a regionalized Bucket communication mechanism; and performing simulation processing based on the microscopic behavior data to obtain a final traffic parallel simulation result, so that the simulation precision and efficiency are significantly improved.
Owner:SOUTHEAST UNIV

Water quality model concentration field correction method and system

The invention provides a water quality model concentration field correction method and system. The method comprises the following steps: acquiring a flow velocity vector field of a target water area output by a two-dimensional hydrodynamic water quality model, and generating a two-dimensional water body trace set; a directed trough line is extracted from the two-dimensional water body trace set, and a water body space corresponding to a target water area is divided into a plurality of correction units with the directed trough line as a reference; performing inverse distance weighted difference on discrete points in each correction unit based on a model calculation concentration field and actually measured concentration data to obtain a unit concentration correction field; and combining the unit concentration correction fields corresponding to the plurality of correction units to generate a global concentration correction field, and correcting a model concentration field of the two-dimensional hydrodynamic water quality model based on the global concentration correction field. According to the method, direct and indirect observation information with different sources and different resolutions is fused to adjust the moving trajectory of the model, so that the simulation forecast error of the model is reduced, and a simulation forecast result with higher precision is obtained.
Owner:CHINA THREE GORGES CORPORATION +1

Method for generating three-dimensional solid geologic model of mine

PendingCN121999157ALow data processing complexityImprove modeling accuracyImage enhancement3D modellingGeodatEngineering
The invention provides a method for generating a three-dimensional solid geologic model of a mine. The method comprises the following steps of: 1, acquiring and preprocessing multi-source mine geologic data; 2, constructing a preliminary mine three-dimensional entity geologic model: based on the multi-source mine geologic data preprocessed in the step 1, performing discretization processing on the geologic data by adopting a three-dimensional gridding method, generating a basic mine three-dimensional entity geologic model of the mine by using modeling software, identifying special structures of cracks and faults in the geologic data, and establishing a preliminary mine three-dimensional entity geologic model; carrying out special structure modeling to obtain a fault model; the fault model is adopted to refine the basic mine three-dimensional entity geologic model, and a preliminary mine three-dimensional entity geologic model is obtained; and step 3, carrying out iterative optimization and uncertainty quantification on the model precision. And 4, dynamically adjusting the model in real time. The model generated by the method has the characteristics of low data processing complexity, high model precision and comprehensive and definite geological information, and the performance of the mine three-dimensional entity geological model is integrally improved.
Owner:XIAN COAL SCI TRANSPARENT GEOLOGICAL TECH CO LTD

Method for simulating and planning of device cluster job based on multi-agent cooperation

PendingCN122509035AWith dynamic envelope characteristicsImprove robustnessPathPingReachability
The present application relates to the field of simulation technology, specifically to a device cluster job simulation planning method based on multi-agent cooperation, which constructs a land grid model and a yield density upper and lower bound channel, determines the capacity critical threshold interval by forward cumulative scanning, generates a target point based on the interval midpoint and passability constraints, and realizes cooperative device path guidance. The target point offset gating mechanism is introduced to control path re-planning triggering, improve path stability and responsiveness. The interval boundary is dynamically modified during the job process by combining the measured yield, and the final meeting point is locked when the interval length and meeting distance conditions are met. After the simulation is completed, the attribution analysis is performed by locking the deviation and cumulative displacement indicators, the row sequence is adjusted and iteratively re-simulated and optimized by combining the row accessibility, and the optimal job scheme is output. The method can improve the efficiency and simulation accuracy of device cooperative operation in complex environments.
Owner:LIANYUNGANG SHUANGYA MACHINERY CO LTD

Drainage basin ecological hydrological process simulation and prediction system based on mechanism hydrological model and AI coupling

The invention discloses a drainage basin ecological hydrological process simulation and prediction system based on a mechanism hydrological model and AI coupling, and relates to the technical field of drainage basin ecological hydrological simulation and prediction. Multi-source data integration and preprocessing are carried out through a data input layer, and a standardized data set is output and provided for a model coupling layer; the model coupling layer directly receives the standardized data set of the data input layer and outputs an optimized simulation result and a predicted value to the simulation and prediction layer; the simulation prediction layer receives a simulation result and a prediction value of the model coupling layer, performs multi-dimensional ecological hydrological element collaborative simulation and short-term-medium and long-term scene adaptive prediction, and outputs a simulation prediction result to the result output layer; and the result output layer receives the simulation prediction result of the simulation prediction layer and provides visual interaction and decision suggestion generation functions. The invention provides an innovative scheme of deep fusion of a mechanism model and an AI technology, and comprehensive requirements of physical rationality, data fitting precision, multi-element coverage and efficient response are covered.
Owner:ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER