610 results about "Fluid power" patented technology

The invention provides a customized energy-saving air conditioner control method and device for industrial process requirements, and is applied to the technical field of data processing. According to the method, electromagnetic interference and vibration noise are eliminated through Kalman filtering, and a standardized process-environment-energy consumption correlation sequence is generated; and converting the three-dimensional process load map into a three-dimensional process load map, and establishing an individualized air conditioner dynamic load prediction model in combination with heat and humidity characteristics of a scene through fluid dynamic simulation and self-adaptive grid division. Extracting process priority factors to construct an adjustment matrix, calculating an air conditioner parameter combination under target energy consumption, extracting energy consumption characteristics, dividing standard exceeding risk levels, and constructing a multi-dimensional characteristic matrix; and comparing real-time data with historical data to identify abnormity, and generating an energy consumption optimization correction factor. Users are grouped according to enterprise conditions, key factors are screened by using a gradient boosting tree, a personalized energy-saving control model is constructed by fusing multiple information, target parameters are output, and a real-time adjustment instruction and a time-phased energy-saving strategy are generated in combination with a time sequence.

The invention discloses a tunnel ventilation control system and method based on artificial intelligence, and relates to the technical field of ventilation control, and the method comprises the steps: in a tunnel design stage, building an unsteady-state computational fluid dynamics model based on tunnel three-dimensional linear parameters, calculating turbulence structures under different traffic conditions through a large eddy simulation method, and calculating an unsteady-state computational fluid dynamics model; determining an optimal space configuration scheme of the fan group according to the distribution of the velocity field and the pressure field; in the tunnel construction stage, multiple types of sensor arrays are arranged along the vault and the side wall of a tunnel in a layered mode; in the tunnel operation stage, real-time vehicle tracks and speed distribution information of a traffic monitoring system are obtained; establishing a ventilation demand dynamic prediction model based on space-time correlation analysis, constructing a fan cooperative control model considering airflow organization optimization, and solving an optimal operation strategy by adopting a multi-target adaptive weight distribution algorithm; when a fire characteristic signal is monitored, the multiple sets of fans are coordinated to form a relay type smoke exhaust airflow organization.

The invention relates to the technical field of intelligent control of filters, and discloses an intelligent control method for a self-cleaning filter based on sensing of the Internet of Things. The method comprises the following steps: collecting multi-source sensing data such as inlet and outlet water pressure difference, flow fluctuation frequency, turbidity change rate and vibration spectrum characteristics when the filter runs; performing hierarchical clustering on the data according to a preset blockage level threshold value, and generating a blockage feature matrix with a timestamp; the matrix dynamic state is monitored in real time, and when the turbidity change rate and the covariance of the vibration spectrum characteristics exceed a dynamic threshold value, self-adaptive cleaning strategy switching is triggered; in combination with the time-space matching degree of a historical cleaning period and a current matrix, decomposing sub-feature sets of high-frequency blockage and low-frequency deposition modes, and correcting the weight of the high-frequency sub-feature sets through cross validation of fluid dynamics and mechanical wear parameters; and finally, a preferential cleaning area is reversely positioned along the structural topological graph of the filter, a three-dimensional cleaning path instruction is generated, and the opening degree of a blow-down valve is synchronously adjusted, so that the control and operation performance of the filter is optimized.

The invention relates to the technical field of water pump intelligent control, and discloses a water pump controller parameter self-adaptive adjustment control method and system.The water pump controller parameter self-adaptive adjustment control method comprises the steps that meteorological early warning data, pressure pulsation signals of all pump stations and pipe network topology data are obtained; generating a time-space synchronous disaster monitoring data set through a data fusion algorithm; inputting the disaster monitoring data set into the deep space-time diagram neural network, and outputting a pipe network damage probability distribution diagram; generating a pulsation propagation prediction model containing propagation time delay and an attenuation coefficient based on a fluid dynamics equation and the pipe network damage probability distribution diagram; calculating a PID controller parameter coordinated regulation scheme of each pump station by minimizing an objective function including pressure deviation, flow fluctuation and parameter regulation quantity; and system response data is acquired in real time, and adaptive optimization of a control strategy is realized. According to the invention, stable operation of the water supply system under disaster conditions is realized.

Embodiments disclosed herein include buoyant wave energy converters. In an embodiment, the wave energy converter comprises an upper chamber having a first fluid reservoir and a first gas pocket, and a lower chamber having a second fluid reservoir and a second gas pocket. An injection tube is between and fluidly coupled to the upper chamber and the lower chamber, where the injection tube is to impel a fluid from the second fluid reservoir into the first fluid reservoir when the upper chamber, the lower chamber and the injection tube oscillate about a waterline with the upper chamber adjacent to the waterline and the lower chamber below the waterline and vertically beneath the upper chamber. In an embodiment, an effluent tube is fluidly coupled to the upper chamber and the lower chamber, where the effluent tube is to return the fluid from the first fluid reservoir to the second fluid reservoir.

Methods and systems for performing a formation pressure test include inserting a bottom hole assembly (“BHA”) into a wellbore. The BHA includes a drill bit and a formation testing tool with a battery and a fluid powered generator. An initial formation pressure test is performed while powering the formation testing tool with the fluid powered generator during the entire initial test. At least a portion of a formation pressure test is performed powering the formation testing tool with the battery during while the fluid powered generator is unavailable due to insufficient fluid circulation in the wellbore. The method also includes determining, using a processor, at least one characteristic of the formation based on results of the initial formation pressure test and the formation pressure test.

A method for controlling a flow regulating valve (6) of a filling machine (1), controlling the flow of pourable food product, envisages: receiving an inlet pressure measurement (PIN) from a pressure sensor (14); receiving an inlet flow measurement (FIN) from a flow meter (16); determining a control signal (Sc) for controlling an operating position of the flow regulating valve (6) by combined contributions (C1, C2) of a flow feedback control module (22), receiving at its input a flow set point (FSP) and the inlet flow measurement (FIN) and generating a first control contribution (C1) indicative of a difference between the inlet flow measurement and the flow set point; and a flow feed-forward control module (20), receiving at its input the inlet pressure measurement (PIN) and the flow set point (FSP) and generating a second control contribution (C2) as a function of the flow set point and inlet pressure measurement, using pre-stored fluid-dynamic maps, which may be a result of a characterization of the flow regulating valve in a test condition. The flow feed-forward control module uses the fluid dynamics maps in a dynamically adaptive manner, depending on different operating conditions of the filling machine and / or the related pourable food product, thereby adapting to the same different operating conditions and / or the pourable food product.

A buoyant hydrodynamic pump is disclosed that can float on a surface of a body of water. Wave-driven oscillations result in periodic upward ejections of water inside a downwardly projecting tube that can be collected in a reservoir. Water within such a reservoir may return to the body of water via a turbine, thereby generating electrical power, or the device's pumping action can be used for other purposes such as water circulation, propulsion, dissolved minerals extraction, or cloud seeding.

The invention discloses a Fluent-based numerical simulation and experimental design method for shaking of liquid in a tank of a tank truck, and belongs to the technical field of numerical simulation of fluid dynamics (CFD). The method includes the steps that the hole opening position of the wave-proof plate serves as an independent variable, multiple hole opening position schemes are designed, liquid shaking related indexes are determined to serve as dependent variables, a geometric model is established according to the actual structure of a tank truck tank body, a fluid mechanics model and boundary conditions are set, a solver is configured, output parameters and numerical simulation initial values are set, and an experiment is executed. The liquid shaking process of a certain swash plate trepanning scheme is simulated, acting force data, namely shaking index data, between liquid shaking and the inner wall of the tank body is recorded, the advantages and disadvantages of each trepanning position scheme are evaluated based on the shaking index data, and the optimal scheme is determined. According to the method, a real object experiment is replaced by CFD numerical simulation, parameter setting is carried out, the experiment cost and the experiment risk are remarkably reduced, the experiment efficiency is improved, and data support can be provided for industry design.

The invention discloses an electric drive bridge oil duct flow distribution optimization method and system based on a simulation technology, and belongs to the technical field of electric drive bridge lubricating oil duct design. The method comprises the steps that a mathematical model of an electric drive bridge lubricating oil duct and the target flow of each oil injection opening are obtained; performing gridding processing on the mathematical model, constructing a CFD simulation model, and calculating the simulation flow of each oil injection port; establishing a one-dimensional pipeline analysis model, and comparing a calculation result with a fluid dynamics simulation result to confirm the effectiveness of the one-dimensional model; setting a variable range by taking the pipe diameter of the oil injection port as an optimization variable, and performing multi-round optimization on the one-dimensional model by adopting a genetic algorithm to obtain optimization parameters meeting design requirements; reconstructing an oil duct model according to an optimization result, and performing designability verification through simulation; according to the method, lubricating oil flow distribution can be efficiently evaluated and optimized in the design stage, the optimization precision is improved, the development period is shortened, and the test cost is reduced.

The present invention discloses a multi-objective thermal-fluid topological design optimization method for the cooling element of a precision gear grinding machine tool, comprising the following steps: Step 1: Define the design domain: Expand the cooling element into a plane, define a two-dimensional design domain representing the cooling element's geometric structure, and discretize it using the finite element method; Step 2: Numerical modeling: Model the cooling element as a porous medium; Under the conditions of laminar incompressible flow, the fluid dynamics are governed by the dimensionless forms of the continuity equation and the momentum equation; The fluid-solid coupled heat transfer model is governed by the dimensionless energy conservation equation; Step 3: Construct an objective function: The optimization objective is defined as a weighted function of heat transfer and fluid dissipated power, and a fluid-solid heat transfer topological optimization model is constructed; Step 4: Solve the objective function; Step 5: Restore the shape and structure of the cooling element. The present invention also discloses a precision gear grinding machine tool and a cooling element.

The invention discloses a multi-objective optimization design method and system for an axial-flow circulating pump, and belongs to the technical field of evaporative crystallization systems.The method comprises the steps that design variables are selected to construct a multi-objective optimization model, the design variables are associated with geometric parameter sizes of an axial-flow pump full-flow-channel parameterization model, initial fluid dynamics calculation is executed, and a multi-objective optimization model is constructed; obtaining an initial data set containing a design variable-performance response mapping relation, and performing parameter sensitivity analysis on the initial data set to screen key design variables; on the basis of the initial data set, an optimal approximation model is adaptively selected for the key design variables, multi-objective optimization is carried out, and a Pareto optimal solution set is determined; uncertain factors are introduced for robustness evaluation, a target design scheme is determined, and after fluid dynamics verification is carried out, the design scheme of the design variables of the axial flow type circulating pump is obtained. According to the method, an optimization process with high integration, automatic iteration and intelligent learning is constructed, and rapid, accurate and steady multi-objective optimization design of the axial flow pump hydraulic model is realized.

Embodiments include a buoyant wave energy converter. In an embodiment, the wave energy converter comprises an upper chamber having a first fluid reservoir and a first gas pocket, and a lower chamber having a second fluid reservoir and a second gas pocket. In an embodiment, an injection tube is between and fluidly coupled to the upper chamber and the lower chamber, where the injection tube is to impel a fluid from the second fluid reservoir into the first fluid reservoir when the upper chamber, the lower chamber and the injection tube oscillate about a waterline with the upper chamber adjacent to the waterline and the lower chamber submerged below the waterline and vertically beneath the upper chamber. An effluent tube is fluidly coupled to the upper chamber and the lower chamber, where the effluent tube is to return the fluid from the first fluid reservoir to the injection tube.

The invention provides an air conditioner control method, an air conditioner and a storage medium. The method comprises the steps that thermal data, user state data and air quality data of a current indoor space are obtained in real time; according to the heating power data, the user state data and the air quality data, air supply grade area division is conducted on the current indoor space, and air supply grade area data are obtained; obtaining a computational fluid dynamics simulation model database matched with the current indoor space; predicting based on a computational fluid dynamics simulation model database by utilizing a preset air supply strategy model according to the thermal data, the user state data, the air quality data and the air supply grade area data, and generating a current air supply strategy; and the air conditioner is controlled according to the current air supply strategy. By applying the air conditioner control method, the precision of the air supply strategy can be improved, and the air supply effect is optimized.

The invention discloses a method for optimizing key structure parameters of a deep well electric submersible pump based on performance simulation, and relates to the technical field of design optimization of electric submersible pumps, a three-dimensional geometric model of a deep well submersible centrifugal pump is built in advance, the three-dimensional geometric model comprises an impeller, a guide shell, a pump shaft, a pump shell, an upper connector, a lower connector and a full-flow-channel structure, and initial structure parameters are calibrated; and establishing a centrifugal pump simulation model based on a computational fluid dynamics technology, performing fluid domain extraction, grid division and grid independence verification on the three-dimensional geometric model, and setting fluid attributes, boundary conditions and a turbulence model. According to the method, a closed-loop iteration framework for simulation, optimization, evaluation and feedback is constructed by adopting a mode of coupling a computational fluid dynamics simulation technology and a genetic algorithm, the limitation of local parameter optimization in the prior art is broken through, systematic and collaborative optimization of key structure parameters of the submersible centrifugal pump is realized, and the method is suitable for large-scale popularization and application. And the efficiency of the optimization process and the final optimization effect are obviously improved.

The invention discloses a heat dissipation device and electronic equipment, and relates to the technical field of heat dissipation, and the heat dissipation device comprises a cooling liquid source, an inlet liquid collection part, a return liquid collection part, a first heat exchange runner and an air cooling module; through the combination of the first heat exchange runner and the air cooling module, the heat dissipation efficiency and the system suitability of the heat dissipation device are improved. The fluid power cavity in the first heat exchange flow channel provides a mounting space for the air cooling module, and the air cooling module automatically drives the air cooling module to rotate by utilizing the flowing of cooling liquid in the fluid power cavity, so that the heat dissipation system can strengthen the heat exchange effect through the synergistic effect of air cooling and liquid cooling while keeping the compact structure, and the heat dissipation efficiency is improved. The problem that in the prior art, a heat dissipation device is high in dependence degree on environmental conditions is at least solved; and when the environment temperature rises, the heat dissipation capability of air is obviously reduced, and effective cooling is difficult to carry out. The technical effects of flexibly adapting to the heat dissipation requirements in different environments and considering the heat dissipation performance, the system stability and the use flexibility are achieved.

The invention discloses a self-adaptive air pressure regulation and control system of quartz sand unpowered powder selecting equipment, and relates to the technical field of automatic control. According to the method, wind pressure and airflow disturbance signals are collected, a high-resolution map is generated through Hampel filtering and noise reduction, features are extracted through the convolutional neural network, key influence areas are identified, the problem of unstable wind pressure caused by airflow disturbance in a mountainous area is solved, and the particle separation precision is improved; a natural potential energy distribution matrix is constructed based on building floor height difference, velocity field reconstruction and airflow channel optimization are driven, technological parameters are adjusted in combination with a gradient descent algorithm, precise utilization of natural potential energy is achieved, energy consumption is reduced, uneven efficiency is improved, airflow distribution is simulated through a fluid dynamic model, and sedimentation behaviors are analyzed and predicted through particle trajectory. A support vector machine is used for classifying tracks and generating regulation and control instructions, PID control is used for stabilizing air pressure to form a closed loop, the problems that fine powder is mixed with coarse powder, coarse particles are left and the like are avoided, the equipment blockage risk is reduced, and the product purity stability is improved.

The invention provides a method for regulating and controlling a hydrodynamic balance valve with a real-time load feedback function, and the method comprises the steps: collecting the strain, water level, gas, vibration and motor current data of the balance valve in real time, constructing and utilizing a comprehensive load balance model, and calculating the effective safety torque of the balance valve in real time at an edge calculation layer; a mechanical wear degradation factor is calculated based on the action history and the current variance of the locking mechanism, and the instantaneous instability risk probability is calculated in combination with the effective safety torque and the current locking torque; according to the instantaneous instability risk probability, an output mode of a locking mechanism is dynamically adjusted to execute a graded locking action; and periodically calculating a full-life-cycle health degree index, and automatically generating a maintenance or replacement work order when the full-life-cycle health degree index is lower than a preset threshold value. According to the invention, the conversion from passive alarm to active defense is realized, and the safety and operation and maintenance efficiency of the urban balance valve in rainstorm, heavy load and corrosion environments are obviously improved.

The invention relates to the field of transformer overload control, in particular to a method and system for dynamically evaluating the overload capacity of a transformer, and the method comprises the steps: firstly, precisely extracting load step features and eliminating interference through a high-precision collection and sliding window differential verification technology; then, operating a finite-state machine based on a fluid dynamics principle, and switching among three modes of steady-state coupling, inertial decoupling and linear recovery according to load change; especially, a decoupling mode is entered during load impact, adiabatic temperature rise is utilized to deduce and replace lagged actually measured top oil temperature, and the problem of calculation distortion of a traditional model during oil flow lagging is effectively solved. In addition, the system executes double-thread calculation of the standard model and the inertial sensing model in parallel, outputs the final hot spot temperature through the maximum arbitration logic, and deduces the remaining allowable operation time according to the final hot spot temperature so as to generate a protection control signal. According to the invention, the evaluation accuracy and the operation safety of the transformer under the short-time overload condition are obviously improved.

The invention provides an industrial steam turbine exhaust optimization system and method, and belongs to the technical field of steam turbine design, and the method comprises the steps: obtaining a flow field data set representing the full working condition operation of a steam turbine; based on the flow field data set, processing last-stage blade outlet section flow field information so as to determine rotational flow strength factors corresponding to all the operation working conditions; converting the three-dimensional solid geometry of the exhaust hood diffuser into a candidate three-dimensional geometric configuration parameterized model controlled by preset geometric parameters; coupling the candidate three-dimensional geometric configuration parameterized model with the corresponding rotational flow intensity factor according to each operation condition, and determining a pressure recovery coefficient and a flow stability coefficient through computational fluid dynamics simulation; and in combination with the preset performance weight coefficient and the preset working condition weight, the pressure recovery coefficients and the flow stability coefficients of all the operation working conditions are subjected to weighted calculation, so that the design points of the unit and the comprehensive operation efficiency, the full-working-condition adaptability and the operation safety under the variable working conditions are remarkably improved, and the design period is greatly shortened.

The invention relates to the technical field of hydraulic support auxiliary equipment monitoring, in particular to a hydraulic support concentrated solution state online monitoring intelligent supplementing system which comprises a basic monitoring unit, a core calibration unit and an intelligent supplementing control unit. A basic monitoring unit collects multi-position flow velocity signals and sampling point concentration original data through a circulating pipeline built-in sensor, and a core calibration unit constructs a layered flow velocity weight model based on pipeline fluid dynamic characteristics, divides a central high flow velocity area and a near-wall low flow velocity area, dynamically distributes concentration weight coefficients of the two areas, and performs calibration on the flow velocity signals and the sampling point concentration original data. Data are processed through a weighted fusion algorithm, an actual concentration estimated value is output to eliminate detection negative deviation caused by flow velocity layering, an intelligent supplement control unit takes the value as a target threshold value to construct a trend prediction model, and when the concentration is continuously lower than the threshold value, a dual-constraint mechanism is started to generate a valve opening instruction; the concentration of the concentrated solution is stably maintained in an anti-rust and anti-foaming critical threshold range, and stable operation of the hydraulic support is guaranteed.

The utility model relates to the technical field of fluid measurement, in particular to an angle balance valve with a real-time metering function. Comprising a valve body assembly, a valve element, a valve seat assembly and a differential pressure flow meter metering system, the valve body assembly comprises a first round pipe and a second round pipe, the valve element is arranged in the first round pipe, the first round pipe is provided with at least two sets of through holes which serve as a high pressure tapping opening and a low pressure tapping opening respectively, and the valve seat assembly is installed through the valve body assembly. The valve seat assembly is matched with the valve element, the two collecting ends of the differential pressure flowmeter metering system are connected with a high pressure tapping opening and a low pressure tapping opening respectively, and gas flow data of the current valve body assembly are obtained by collecting corresponding high pressure signals and low pressure signals. According to the utility model, the valve core is optimized by using fluid dynamics, so that the valve core has a throttling function, meanwhile, a differential pressure flowmeter metering system is introduced to meter the valve core in real time based on the throttling function, and the valve core and the valve seat assembly are combined for use, so that the real-time adjustment of the gas flow is realized.

A fully-submerged multi-stage Horizontally-oriented Conical-helical Hydrokinetic Turbine that captures water stream flows (river, tidal, deep ocean currents) and funnels this kinetic-rich concentrated flow into a conical turbine system consisting of a rotating arrangement of helical hydrofoil blades wherein the internal stream is forced to exit out through the frustum turbine blade assembly. With a higher Capacity Factor and Power Coefficient than conventional renewables, this turbine is designed to be an environmentally friendly baseload electricity generator to meet the ever-increasing electricity demands.

The invention relates to the field of scroll compressor design, and discloses a full-meshing double-vortex-ring scroll compressor diffusion hole machining design method which comprises the steps of constructing an initial design domain, defining a multi-working-condition working point set and a fluid dynamic control equation determined by compressor operation parameters to construct a multi-working-condition analysis model, establishing a solid isotropic material penalty model, and designing a diffusion hole of a full-meshing double-vortex-ring scroll compressor according to the solid isotropic material penalty model. Multi-working-condition robustness topological optimization with the total pressure loss weighted sum under all the weighted working conditions as the target is executed, a discrete pseudo-density field is obtained, parameterized geometric reconstruction is conducted on the discrete pseudo-density field, and a diffuser hole parameterized geometric model controlled by parameter vectors is obtained. By introducing multi-working-condition robustness topological optimization and integrated dynamic machining constraint linkage re-optimization, remarkable robustness of aerodynamic performance of the diffusion hole in a wide working range is achieved, it is ensured that the diffusion hole meets the high-quality and high-efficiency numerical control machining requirements congenitally, and the design efficiency and manufacturing feasibility of the diffusion hole of the scroll compressor are greatly improved.

The invention relates to the technical field of oxygen production, and discloses an air suspension oil-free VPSA oxygen production system and method based on multi-dimensional closed-loop control, the system adopts a buffer-tank-free direct connection architecture, and a real-time surge margin is calculated through a sensing reconstruction module, and a power bypass module is driven to dynamically match fluid impedance to suppress surge. A thermal control buffer module is introduced, cooling adjustment is locked under the sensitive working condition through dynamic thermal interlocking logic, and temperature fluctuation is buffered and stabilized through thermal capacity. And the central decision-making module executes a density compensation and time sequence feedforward strategy, and preadjusts the torque of the compressor and the opening slope of the valve according to the air inlet density and the process time sequence. The closed-loop control logic based on the real-time surge margin and the change rate of the real-time surge margin is utilized, the high-speed unloading valve is driven to provide a discharge channel when the system impedance abnormally rises, and the hydrodynamic instability caused by process switching of the direct connection system and the equipment overload risk caused by environment load change are effectively restrained.

The invention is suitable for the field of low-temperature gas ejection and fluid system optimization, and provides a Venturi ejector structure parameter optimization method of a nitrogen phase separator gas return pipeline for a large scientific device. According to the method, geometric variables such as a main nozzle angle, a throat diameter and a diffusion angle are subjected to parametric modeling, key performance indexes such as an ejection coefficient, ejected mass flow and temperature field uniformity are extracted based on computational fluid dynamics simulation, a multivariable response surface model is constructed, and global optimal solution search is performed through a genetic algorithm. In the system operation process, if flow field fluctuation exceeds a threshold value, parameter re-optimization can be triggered in real time, and self-adaptive adjustment of the structure is completed. The method has the advantages of being efficient in optimization, rapid in response, high in self-adaptive capacity and the like, is suitable for efficient injection and dynamic regulation and control scenes of low-temperature gas in a complex thermal system, and has wide engineering application prospects and popularization value.

The invention relates to the technical field of industrial process control and fluid dynamic measurement, and discloses a high-precision liquid flow detection method based on a sensor. The method comprises the following steps: arranging a sensor, initializing a measurement section, receiving an ultrasonic signal, extracting a phase difference updated along with time, executing two-point temperature calibration, converting liquid temperature and correcting sound velocity, and obtaining static propagation time delay and a theoretical phase; constructing a net phase difference, inverting an axial instantaneous flow velocity according to a propagation difference, and applying non-negative and upper bound constraints; collecting pressure fluctuation to estimate a turbulence equivalent speed and superposing the turbulence equivalent speed with the main speed; calculating the volume flow according to the cross section area and accumulating the volume; phase anomaly, temperature rate and pressure peak detection is carried out, and substitution, recalculation and interpolation are adopted respectively; and counting and normalizing the maximum values of the speed and the flow, and outputting the speed, the flow, the accumulated volume and a normalized curve.

The present application belongs to the field of fluid dynamics, and particularly relates to a fluid enhancing device. The device comprises a pressure cylinder and an enhancing part. The tail of the pressure cylinder is provided with a tail spray cover, and a plurality of holes are formed in the tail spray cover. The enhancing part is composed of a connecting pipe and a fluid amplifier. The connecting pipe connects the holes and the fluid amplifier. A sleeve pipe is further arranged on the pressure cylinder and connected to the inside of the pressure cylinder. A sealing layer is arranged in the sleeve pipe. The present application provides a fluid enhancing device. After the fluid enhancing device is installed on a fluid generator capable of generating high-pressure fluid, the fluid spraying amount can be increased by multiple times under normal operation without increasing additional fuel and energy consumption. Moreover, the fluid generator and the sprayed fluid can be cooled.

The invention discloses an abrasive water jet rock breaking simulation method based on a DEM-CFD coupling method. Establishing an EBPM bonded rock mass discrete element model through a discrete element DEM, and calibrating mesoscopic parameters through a virtual mechanical test; simulating a water-abrasive two-phase flow through fluid dynamics CFD, and adopting a Gidaspow drag force model; the DEM-CFD bidirectional interface realizes real-time coupling; carrying out post-treatment to extract an erosion morphology and a crack network; the method can effectively simulate the rock mass fracture process and the large deformation behavior in the water jet rock breaking process and reveal rock mass damage evolution from the microscopic scale, and can be widely applied to research of water jet assisted rock breaking in the fields of civil engineering, mining, petroleum energy, marine resources and the like.