60 results about "Grid file" patented technology

The invention discloses a CFD calculation method and system based on a neural network and adaptive parameter optimization, and belongs to the technical field of computational fluid dynamics. Initializing a flow field by reading calculation parameters and a grid file; solving the N-S equation, recording solving parameters and outputting an intermediate flow field; inputting the intermediate flow field into a pre-trained physical constraint neural network, sequentially applying boundary condition hard constraint and soft constraint based on control equation residual error, and outputting a corrected flow field; based on the convergence dynamic characteristics and the solving parameters, outputting a parameter adjustment amount through a strategy network of reinforcement learning training, and dynamically optimizing the solving parameters; and taking the corrected flow field as an initial flow field of the next iteration step, updating solving parameters, and circularly executing until convergence. According to the method, the physical prior is embedded into the neural network, intelligent self-adaptive regulation and control of solving parameters are realized through reinforcement learning, and the prediction precision and convergence efficiency of complex flow simulation are remarkably improved.

The invention discloses a flow-induced noise integration method, device and equipment based on a finite element method and a storage medium, and relates to the technical field of noise integration, and the method comprises the steps: obtaining an aerodynamic noise source based on a sound source type and a time domain flow field file; transmitting an aerodynamic noise source from the fluid grid to the acoustic grid based on the acoustic grid file and a data mapping algorithm to obtain a time domain sound source; converting the time domain sound source into a frequency domain sound source based on a time-frequency conversion strategy; and constructing a numerical model based on the frequency domain sound source, and solving the numerical model to obtain a sound propagation result. The problems that in a traditional mixing method, due to the fact that a plurality of independent modules exchange large-scale intermediate data through a file system, the process is split, reading and writing are time-consuming, and user operation is tedious are solved, integrated solving of aerodynamic noise simulation from sound source extraction to sound field calculation is achieved, user operation steps are simplified, and user experience is improved. Therefore, on the premise that the calculation precision is guaranteed, the overall execution efficiency and the automation level of the simulation process are remarkably improved.

The application provides a kind of ultra-low orbit satellite whole process coupling thermal simulation method and system.The method comprises: constructing whole process coupling thermal simulation system;In control layer, the geometric grid file and orbit attitude parameter file of satellite are imported by input setting interface, and simulation time and task flow time sequence are set;The control layer passes the imported parameters to the calculation layer, and starts time iteration calculation;In the calculation layer, three calculation modules are coupled, and the calculation results are transmitted to the data layer for integration;The data layer transmits the integrated data file to the output display interface to show the simulation results in the form of numerical value, curve or cloud picture.The ultra-low orbit satellite whole process coupling thermal simulation method proposed by the application constructs an integrated thermal simulation system that integrates multiple core calculation modules, while supporting numerical, curve, cloud picture and other forms of visual output, which facilitates designers to intuitively and comprehensively evaluate the satellite thermal management effect.

The application discloses an automatic verification and evaluation method and system for simulation effect of an air quality model, and comprises the following steps: determining meteorological stations and air quality stations in a simulation area range based on the simulation area range, and obtaining corresponding formatted monitoring data; selecting the nearest grid point in a grid file corresponding to the monitoring stations based on the longitude and latitude of each station, batch extracting simulation values in the corresponding grid, and obtaining formatted simulation data; matching and merging the monitoring data and the simulation data, and obtaining a corresponding merged file; calculating the merged file, and obtaining statistical index results of different parameters of each station; and performing statistical analysis, time series analysis and spatial distribution analysis on the statistical index results. The application can realize rapid extraction, analysis and comparison of simulation results, improve the verification efficiency, reduce the need for human interference and subjective judgment, provide reliable quantitative analysis, and improve the objectivity and repeatability of the verification.

The invention provides a dam internal structural surface automatic identification method and device, and relates to the technical field of hydraulic engineering structure analysis and computational mechanics, and the method comprises the steps: reading a dam finite element grid, and defining boundary control parameters of a target structural surface position; the method comprises the following steps of: identifying a connecting surface simultaneously containing a first type of boundary nodes and a second type of boundary nodes in a model, and performing iterative expansion on the connecting surface by utilizing a topology propagation algorithm to form a continuous connecting surface set; positioning all unit surfaces formed by the first type of boundary nodes based on the set, and integrating the unit surfaces to obtain a target structural surface; and finally, outputting a multi-format grid file through coordinate transformation. According to the method and the device provided by the invention, the node boundary type is defined, the topology propagation algorithm is utilized to automatically identify and iteratively expand the connecting surface, the identification precision is improved, the processing efficiency is improved, the efficient and full-automatic identification of the internal structural surface of the dam is realized, and a core technical support is provided for structural analysis.

The invention discloses a dynamic grid local re-subdivision method based on an initial model and a grid, and belongs to the technical field of dynamic grids. The method comprises the following steps: reading an initial model file, and setting the initial displacement of a moving area to be 0; subtraction operation is carried out on the re-subdivision area and the moving area in the model; copying geometric data of the re-subdivision area and deleting the geometry of the original re-subdivision area; mesh generation is carried out on the whole preprocessed model, and an initial mesh file containing a complete computational domain is generated; reading the initial model file, an initial grid file generated in the first time step and the movement amount of the current time step; performing class operation; repairing the model; carrying out initial grid processing; carrying out local re-subdivision and boundary calibration on the grid; and generating a new grid file. According to the method, the calculation overhead is reduced, the simulation efficiency is improved, the grid parameter mapping efficiency is improved, the geometric gap or penetration risk is eliminated, and the core problems of low efficiency and geometric integrity damage in the prior art are solved.

The invention discloses a method for fusing OpenFOAM unsteady state simulation result boundary surface Euler field domain data, which comprises the following steps of: firstly, setting a current OpenFOAM working root directory, reading a grid file and creating an example grid; creating global blank file storage boundary surface Euler field domain data; writing a variable name in the first line of the global blank file; specifying and searching names of concerned boundary surfaces, and sequentially reading Euler field domain data of a plurality of boundary surfaces in the time folder; and sequentially writing each boundary surface Euler field domain data corresponding to the variable name into the global blank file according to the boundary surface grid number, and after data reading, fusion and output are completed, printing information on a screen and prompting that the operation is completed until the operation of the program is finished. According to the method for fusing the OpenFOAM unsteady state simulation result boundary surface Euler field domain data, boundary surface physical parameter spatio-temporal evolution data can be efficiently obtained, the processing efficiency is remarkably improved, and a one-stop solution is provided for post-processing of the OpenFOAM unsteady state simulation boundary surface data.

The invention relates to a finite element simulation grid-based reversible deformation design method and system for an investment casting. According to the method, a coordinate ID matching algorithm is utilized, a mapping relation is established between displacement data in an analyzed grid node displacement data file and corresponding nodes in an initial grid file, and an intermediate grid file containing casting deformation data is generated; by using a data mapping algorithm, reversely assigning the intermediate grid file to the initial grid file, and reconstructing to obtain a corrected grid file containing a reversible deformation feature; and finally, converting the corrected grid file into a three-dimensional geometric model as a reversible deformation design model for investment casting mold manufacturing. Compared with the prior art, the method has the advantages of simple process, high design precision and the like.

The application discloses a kind of based on autonomous grid multi-solver automation simulation method, comprising: reading and analyzing simulation configuration file, obtains target solver type, physical model, working condition, boundary mapping rule and solving control parameter;Read the initial grid file generated autonomously, determine compatibility requirements according to target solver type, format adaptation or version conversion is carried out to initial grid file, and adapted grid file is generated;Based on target solver type, corresponding script template file is called, and parameterized filling is carried out in combination with the foregoing each parameter and grid information, to generate control script;Corresponding solver execution program is called, adapted grid file is loaded and control script is executed to start calculation, and result file containing convergence state information is obtained;Result file is analyzed and processed, key physical quantity data is extracted and engineering evaluation index is calculated, and structured simulation result data is output.

The application discloses a method for calculating volume integral of field quantity in OpenFOAM unsteady simulation result, which comprises the following steps: firstly, setting the current working root directory of OpenFOAM, reading the grid file discretely stored by OpenFOAM and creating the grid of the example; secondly, accessing the time control function and reading the time information; thirdly, creating the global blank file under the working root directory and storing the calculation result of the volume integral; fourthly, writing the time variable name and the variable name corresponding to the volume integral of the physical quantity to be calculated by the program in the first line of the global blank file; fifthly, reading the field quantity data required for calculating the volume integral of the physical quantity in sequence; sixthly, defining and calculating the physical quantity and the intermediate physical quantity concerned by using the regular expression; seventhly, defining the region concerned, calculating the product of the physical quantity concerned and the corresponding grid volume; and eighthly, writing the calculation result in the time sequence and completing the result output by traversing all the time points. The application can automatically process the multi-time point data in batches, greatly reduces the manual operation cost and realizes the efficient acquisition of the time evolution law of the volume integral of the field quantity.

The invention relates to a topological decoupling-based complex component crystal plasticity finite element cross-scale modeling method, which comprises the following steps of: firstly, carrying out macroscopic finite element grid division on a geometric model of a component to be analyzed to export an isolated grid file, and then establishing an RVE voxel grid based on microstructure source data of a material of the component to be analyzed; calculating the geometric centroid coordinate of each unit after macroscopic finite element grid division, and judging the attribution crystal grain ID of each geometric centroid coordinate in the RVE voxel grid through a centroid mapping algorithm to generate a unit set mapping file; then calculating a rotation matrix for each crystal grain ID based on crystal orientation distribution data, combining the rotation matrix with crystal plasticity constitutive model parameters to generate a physical attribute library file, and finally performing semantic analysis and recombination on an isolated grid file to generate a CPFE cross-scale simulation model. According to the method, macroscopic finite elements and microscopic voxel grids are decoupled, the problem that complex geometric expression precision and microstructure fidelity are difficult to consider at the same time is solved, and CPFE cross-scale accurate modeling of complex components is achieved.

The invention relates to a simulation method for the influence of a radiation environment on the signal transmission characteristics of a microsystem device, and the method comprises the following steps: S1, constructing a three-dimensional model of the microsystem device, and splitting the three-dimensional model into independent grid files according to the types of materials; s2, setting a particle type, energy and an incident region in Geant4, simulating particle bombardment, and outputting single-particle energy deposition data, energy deposition distribution and linear energy transfer (LET) data; s3, establishing a material damage model in MATLAB, and calculating the post-radiation conductivity sigma (t) and relative dielectric constant epsilon r based on particle and substance action mechanism analysis; and S4, updating the material parameters calculated in the step S3 to a device model in the HFSS, simulating a signal transmission characteristic curve in a radiation environment, and analyzing an influence mechanism of radiation on signal transmission. The electrical performance of the micro-system device can be accurately evaluated in different radiation environments, a scientific basis is provided for design and optimization of the micro-system device in a high-radiation environment, and the anti-radiation capability and reliability of the device are effectively improved.

The application relates to an electromagnetic simulation grid generation method and device and an electronic device, wherein the electromagnetic simulation grid generation method comprises the following steps: cutting a GDSII layout file according to a process technology file to generate a two-dimensional layout file; stretching the two-dimensional layout file according to the process technology file to generate a three-dimensional geometric model, and establishing a mapping relationship between a two-dimensional graph and a three-dimensional entity; wherein the two-dimensional graph contains a graphic label added for a target object; determining a target three-dimensional entity corresponding to the graphic label of the target object according to a netlist file in combination with the mapping relationship, and creating a port surface at an endpoint of the target three-dimensional entity; constructing an air box surrounding the three-dimensional geometric model; adding an electromagnetic grid to a region represented by each three-dimensional entity, the port surface and an air domain of the air box of the three-dimensional geometric model to generate an electromagnetic simulation grid file, so as to solve the problem of too much manual intervention in the conversion process from a GDSII layout to a simulation grid.

The invention discloses a batch CFD data analysis method and device and a storage medium, and belongs to the technical field of computer-aided engineering. According to the method, based on a preset standardized naming rule, standardized naming is conducted on model components and boundary conditions of a geometric model, and the geometric model obtained after standardized naming is exported as a grid file capable of being recognized by a CFD solver; obtaining a CFD solving macro command template containing replaceable variables, dynamically modifying template variables according to the grid file and naming of the grid file, generating a special macro command, performing batch calculation, and exporting a result file according to a set format; and automatically reading all result files, summarizing and analyzing the data according to a naming analysis model and working condition information, and automatically generating a visual chart and an analysis report. According to the method, through standardized naming and scripted control, unattended operation automation of the whole process from the geometric model to the analysis report is achieved, and CFD simulation efficiency and traceability are remarkably improved.

The present application belongs to the technical field of rock mechanics and geological engineering, and aims to solve the problems of insufficient simulation accuracy, low preparation efficiency and high cost of natural joint topography. A preparation method of rock standard parts for natural joint test is provided, which comprises the following steps: collecting rock blocks to be tested, cutting to obtain rock test blocks for standby; constructing point cloud data based on wavelet basis function and random phase; generating standard grid points in the point cloud data, calculating the height value corresponding to each grid point, and obtaining a grid file; testing whether the simulated natural rough joint surface has the statistical characteristics of natural joint fluctuation topography based on normal distribution test; importing the grid file into a rock carving machine to generate a carving path, performing rough carving and fine carving, and obtaining a rock standard part for test. The present application can efficiently and accurately simulate the multi-scale roughness and anisotropy of natural joints, and provide high-quality standardized test pieces for rock mechanics tests.

The invention discloses a cementing displacement numerical simulation method based on a dynamic isolation plug model, and relates to the technical field of petroleum and natural gas engineering, and the method comprises the following steps: using three-dimensional modeling software, establishing a wellbore model and a representative casing and annulus model, carrying out grid division, generating a grid file, and inputting the grid file into a computational fluid mechanics solver; in a computational fluid mechanics solver, starting a transient solver and a plurality of models; defining parameters and density of each fluid phase through a custom function, setting an injection sequence of each fluid phase, and setting boundary conditions of a computational domain; establishing an isolation plug thin grid model, and adding the isolation plug thin grid model into a computational domain; compiling a user-defined function, defining rigid body motion of the isolation plug, and updating the position of the isolation plug in a computational domain and surrounding grids; and step-by-step time advancing is carried out on the well cementation process, a pressure field, a speed field, phase distribution and an isolation plug movement track evolving along with time are output, and the dynamic change rule of well cementation replacement efficiency and the isolation effect is obtained.

The application discloses a mask-guided image mosaic line generation method and device, computer equipment and a storage medium. The method comprises the following steps: generating a mask image file and an initial mosaic line grid file; calculating the position of the image range of an image to be mosaicked in the mask image file; generating a mark image file of each image to be mosaicked; according to the mask intersection of any two intersecting images to be mosaicked, splitting the images and updating the mosaic line grid file; assigning a pixel value to each pixel in the mosaic line grid file until the traversal of all intersecting images is completed; and performing vectorization on the mosaic line grid file to generate a mosaic line vector file. The application improves the generation efficiency and accuracy of the image mosaic line.

The application discloses a structured grid radiation simulation method based on optical path ordering, and belongs to the field of radiation transmission simulation. The method reads and analyzes a structured grid file, constructs a structured data set, discretizes a solid angle, calculates the projection value of the geometric center of all units on the unit vector of each discrete direction, sorts the units according to the projection value, and obtains the unit calculation sequence along the actual propagation path of the light. The radiation transfer equation in each unit is solved according to the sequence, the calculation result of the upstream unit is transmitted to the downstream unit through the connecting surface as the incident boundary condition, and the global input radiation is converged through iterative calculation. The application ensures that the calculation sequence is consistent with the real propagation path of the radiation energy by optical path physical ordering, eliminates the non-physical reverse radiation transmission, improves the calculation accuracy and convergence, and can directly process general engineering grid data, thereby being convenient for integrated application.

The invention discloses a three-dimensional grid vertex coloring method, device and equipment based on an implicit representation and separated reflection color network. The method comprises the steps of collecting a multi-view data set of an object to be colored, estimating a camera pose through a multi-level view structure recovery method, and determining a standard sampling cubic domain and a grid file; training a NeuS framework to obtain a model containing a geometric branch network and a separated reflection color network; grid vertex coordinates and triangular surface indexes are extracted through a geometric branch network, a color network processes the vertex coordinates to obtain an RGB vertex set, and after gravity center interpolation smooth coloring is conducted, a color three-dimensional grid with explicit vertex colors is generated and written into a file; coloring is completed based on the file. According to the method, UV expansion and illumination modeling are not needed, accurate coloring is achieved through the separated color network, the color grid rendering efficiency is high, compatibility is high, and the problems of texture dislocation and the like can be effectively avoided.

This invention discloses a simulation calculation method for the impact of river sand mining on navigation flow conditions, including: collecting and integrating basic geographic information and hydrological data of the sand mining area to construct a digital elevation model and hydrological database covering the entire area; based on the integrated data and Cartesian coordinate system, using an unstructured grid to partition the sand mining area to obtain a grid file of the sand mining area; given the initial conditions, boundary conditions, and dynamic boundary technology of the model, establishing a two-dimensional planar hydrodynamic model based on two-dimensional continuity equations and two-dimensional momentum equations through data collection and preprocessing; conducting model verification and calibration experiments based on existing historical measured data; and designing two sets of working conditions before and after sand mining according to the sand mining scheme and navigation engineering design scheme, obtaining prediction results based on the simulated values ​​of the hydrodynamic model.

The invention discloses a hydropower station cavitation simulation prediction method, system, equipment and medium, and belongs to the technical field of program simulation, and the method comprises the steps: building a geometric model calculation domain according to the whole flow channel structure parameters of a water turbine in a hydropower station; processing the geometric model computational domain to obtain a geometric file; importing the geometric file into preset grid division software for processing to obtain a grid file; constructing a code according to the working condition of the water turbine, inputting the code into simulation software to complete compiling, and obtaining a simulation program; importing the grid file into simulation software, and associating the grid file with a simulation program to obtain a solution model; and processing the solving model by utilizing simulation software, and outputting the processing result after the processing result meets a convergence condition. The problems that in the prior art, simulation accuracy is not high, and cavitation cannot be predicted are solved.

The invention provides an organic matter rapid screening and peak generation stability verification method based on a comprehensive two-dimensional gas chromatograph-mass spectrometer. The method comprises the following steps: acquiring sample files of at least two samples; generating a grid file corresponding to each sample file, wherein a first grid of the grid file is used for recording a data condition of a corresponding position in the sample file; combining the grid files to obtain an aggregated grid file, wherein the aggregated grid file comprises a plurality of second grids; target grids are screened in the aggregation grid file, organic matter data of the target grids are obtained, the target grids are second grids with the detection probability larger than the preset probability, and the detection probability is used for representing the probability that the organic matter has features in the corresponding positions in the sample files. According to the method, the organic matter data of different samples are merged, and the target grid is screened according to the data condition of the second grid, so that batch processing of the organic matter data of multiple samples is realized, the processing time is shortened, and the efficiency is improved.

The invention discloses a finite element model hole repairing method based on grid node displacement backstepping, and belongs to the technical field of finite element simulation. The method comprises the following steps: carrying out grid division on a three-dimensional model containing a shaft hole; generating entity grids for each part of the model and exporting the entity grids; establishing a hole repairing calculation model in finite element analysis software; defining at least two analysis steps in the hole repairing calculation model; bolt pre-tightening force is applied to the hole repairing calculation model; boundary constraint is applied to the opponent piece; submitting calculation, and extracting the displacement value of each node in the shaft hole under the action of the pre-tightening force after calculation is completed; subtracting the displacement value from the coordinates of the nodes in the axle holes in the original entity grid to obtain corrected node coordinates; and updating the coordinates of the corresponding nodes in the original entity grid file by using the corrected node coordinates. According to the method, the effect of the boring process can be equivalently achieved on the simulation level, and a correct model basis is provided for subsequent accurate finite element analysis of strength, fatigue and the like.

The invention discloses a method and device for positioning a fault area and a nonvolatile storage medium. The method comprises the following steps: receiving a grid file, and determining a complete solution area of an antenna array to be subjected to fault positioning according to the grid file; dividing the complete solving region into a plurality of sub solving regions under the constraint of a preset electromagnetic thermal continuity condition; solving the plurality of electromagnetic field control equations in parallel to obtain a plurality of first solving results, and solving the plurality of heat conduction equations in parallel according to the plurality of first solving results to obtain a plurality of second solving results; determining an overall electromagnetic performance parameter and a temperature distribution cloud picture of the antenna array according to the plurality of first solving results and the plurality of second solving results; and positioning a fault area according to the overall electromagnetic performance parameters and the temperature distribution cloud picture. The technical problem of low accuracy of the analysis result caused by neglecting the influence generated by the temperature in the scheme of carrying out fault analysis on the antenna array in the related technology is solved.

The application relates to the technical field of aerial refueling, and discloses a hose-drogue aerial refueling multi-disciplinary coupling analysis framework and method, which comprises the following steps: a data layer is used to provide required file information for fluid mechanics analysis and multi-body dynamics calculation; a grid layer is used to generate a discrete grid file according to the file information provided by the data layer; a calculation preparation layer is used to provide required unsteady aerodynamic effect parameters, an aerodynamic database and a three-dimensional tanker wake flow field file for hose-drogue coupling calculation; a calculation layer is used to perform fluid-solid coupling dynamics response simulation on the release and stabilization process of the hose-drogue in the tanker wake flow field; and a post-processing layer is used to post-process and display the aerial refueling hose-drogue calculation data obtained through the coupling simulation calculation. In this way, quick and high-precision simulation of the release and stabilization process of the hose-drogue in the tanker wake flow can be performed, and key technical support can be provided for the design and safety evaluation of a domestic soft aerial refueling system.

The invention discloses a method for calculating field volume integral in an OpenFOAM unsteady state simulation result, which comprises the following steps of: firstly, setting a current OpenFOAM working root directory, reading a grid file discretely stored by the OpenFOAM, and creating an example grid; accessing a time control function, and reading time information; creating a global blank file under the working root directory, and storing the calculation result of the volume integral; writing a time variable name and a variable name corresponding to a physical quantity volume integral to be calculated by a program into the first line of the global blank file; sequentially reading field quantity data required for calculating the volume integral of the physical quantity; defining and calculating a concerned physical quantity and an intermediate physical quantity through a regular expression; defining a concerned area, and calculating a product of a concerned physical quantity and a corresponding grid volume; and writing a calculation result according to a time sequence, and traversing all moments to complete result output. According to the method, multi-moment data can be automatically processed in batches, the manual operation cost is greatly reduced, and the efficient acquisition of the field volume integral time evolution law is realized.

The invention discloses an intelligent correction method, system and device for construction point forecasting and a medium, and belongs to the technical field of construction point forecasting, and the method comprises the steps: obtaining target data needed for driving sea wave mode operation, carrying out the integrity detection of the target data, obtaining intermediate data, carrying out the preprocessing of the intermediate data, and obtaining a prediction result; integrating the to-be-input data obtained after data preprocessing, the computational grid file and the boundary conditions to obtain a to-be-input file, inputting the to-be-input file into a target model for operation, performing real-time correction in the operation process, performing real-time monitoring on the target model in the operation process, recording key performance indexes according to a monitoring result, and outputting the key performance indexes. And determining to send out a second alarm signal according to a recording result, or outputting an original forecasting result, extracting original forecasting information of each construction point according to the original forecasting result, comparing the original forecasting information with historical forecasting information, correcting according to the comparison information, and outputting target forecasting information.

The embodiment of the invention relates to the technical field of pipeline risk evaluation, and provides a method, device and equipment for predicting corrosion in a sulfur-containing blow-off pipeline and a storage medium, and the method comprises the steps: building a three-dimensional geometric model of the pipeline; performing grid discretization processing on the three-dimensional geometric model of the pipeline to obtain a grid file; setting initial boundary conditions and physical attribute parameters of a single fluid in fluid flow simulation software, wherein the single fluid comprises sulfur-containing sewage and a sulfur removal agent; importing the grid file into the fluid flow simulation software, and selecting a multiphase flow model to carry out mixed simulation on all single fluids to obtain a mixed fluid distribution cloud picture and a sulfur removal agent distribution cloud picture; and obtaining a corrosion prediction area in the pipeline according to the mixed fluid distribution cloud picture and the sulfur removal agent distribution cloud picture. According to the embodiment of the invention, the corrosion area in the pipeline can be predicted based on the distribution of the sulfur removal agent, and scientific theoretical guidance can be provided for prediction of the corrosion area of the blow-off pipeline.

This invention provides a method, apparatus, terminal, and storage medium for simulating incompressible thermal flow fields. The method includes: generating a mesh file; acquiring initial macroscopic quantity information and boundary condition information; generating ghost cells corresponding to mesh cells adjacent to the physical boundary in the corresponding flow field region based on the mesh file; initializing the distribution function of all mesh cells in the corresponding flow field region; setting the distribution function of the ghost cells according to the boundary condition information at each time step; iteratively calculating the distribution function and macroscopic quantity information of the mesh cells in the flow field region until the convergence condition is met; and outputting the flow field simulation results. This invention avoids the calculation of nonlinear convection terms in traditional methods by iteratively calculating the distribution function and macroscopic quantity information, thus effectively improving simulation efficiency.

The application discloses a kind of numerical wave generation method of internal solitary wave based on marine measured data, first determine the size of observation basin, obtain the distribution of seawater physical parameters on three-dimensional space, sampling according to the set spatial resolution, further obtain the three-dimensional spatial distribution of internal solitary wave;The measured data of the three-dimensional spatial distribution of internal solitary wave is reorganized into the data format that can be recognized by Fluent simulation software, and a new ip file is generated;Establish the same size of calculation domain with the observation basin, and establish the numerical tank of internal solitary wave using mesh division software;Read the grid file using Fluent software, interpolate the ip file into the calculation domain to complete numerical wave generation.Set numerical parameters, solution format, click Calculate to start calculation, and the free evolution movement of internal solitary wave can be realized.The application can simulate internal solitary wave in actual ocean simply and quickly, and provides a novel and effective wave generation method for further research on internal solitary wave.