117 results about "Wave simulation" patented technology

The invention, which relates to the technical field of offshore wave simulation, discloses a wave hydrodynamic numerical simulation method for a sea area with a breakwater, comprising the following steps: S1, determining a target sea area, and collecting sea chart data and water depth topographic data of the target sea area; s2, determining a shoreline position of the target sea area, and establishing a water depth terrain database of the target sea area; s3, setting grid precision, and constructing a wave hydrodynamic two-dimensional model of the target sea area; s4, setting boundary conditions for driving the wave hydrodynamic two-dimensional model, and setting initial parameters; and S5, based on the wave hydrodynamic two-dimensional model constructed in the S3, performing numerical simulation on the target sea area by using a sub-grid method to obtain the characteristic wave height and periodic data of the target sea area. According to the method provided by the invention, the calculation efficiency can be ensured, the wave transmission characteristics of the open type oyster reef are considered, and the influence of open type oyster reef construction on the wave hydrodynamic environment field can be accurately simulated.

The invention relates to a multi-modal multifunctional composite metasurface design method and device and a medium, and the method comprises the steps: carrying out the parameterized sampling of the key size of a unit structure through Latin hypercube sampling, and generating a training sample set; electromagnetic simulation is carried out on the sampled structure to obtain two-state electromagnetic response data, and a mixed variable database is obtained; according to the target response, generating a plurality of groups of candidate structures through a generator in the improved conditional variation auto-encoder generative adversarial network, screening the candidate structures through a predictor, calculating a prediction comprehensive error, and selecting a preset number of candidate structures with the minimum prediction comprehensive error to perform full-wave simulation verification; and obtaining a simulation double-state response, calculating a simulation comprehensive error, and judging the current candidate structure according to a preset comprehensive error threshold value. Compared with the prior art, the method has the advantages of multi-state collaboration, low calculation cost, high degree of freedom and the like.

The invention relates to a super-large L-shaped high-sea-condition high-precision absorption type wave maker system and a wave simulation method.The wave maker system comprises a central control layer, an equipment control layer and an execution mechanism layer which are sequentially connected, and the central control layer is characterized in that a main control computer operates wave making control software; a target wave time calendar curve is generated, theoretical motion instructions needing to be executed by the wave making plates are synchronously deduced, the main PLC conducts format conversion and time sequence synchronization processing on the theoretical motion instructions, and wave making plate displacement curve instructions are generated and issued; the equipment control layer is used for calculating active absorption compensation from the PLC and generating a motor motion instruction; the executing mechanism layer comprises a super-large L-shaped wave making unit, a fan-shaped driving arm, a plurality of motors and other assemblies to execute wave making motion and feed back wave height information, and the motors drive the fan-shaped driving arm to drive a wave making plate to swing around a hinge assembly and drive the wave making plate to execute compensation action opposite to the phase of incident waves; high-sea-condition wave simulation and high-precision wave active absorption are realized, and a full-wave-direction test with navigational speed is supported.

The invention discloses a wave hydrodynamic numerical simulation method for a sea area provided with a hedge shrub dam, and relates to the technical field of offshore wave simulation, and the method comprises the following steps: S1, determining a target sea area, and collecting actually measured water depth topographic data and chart water depth data of the target sea area, the target sea area being a salt marsh beach sea area where the hedge shrub dam is planned to be arranged; s2, setting grid precision, and constructing a wave hydrodynamic two-dimensional model of the target sea area by using a structured grid; s3, setting boundary conditions for driving the wave hydrodynamic two-dimensional model, and setting initial parameters; and S4, based on the wave hydrodynamic two-dimensional model constructed in the S2, performing numerical simulation on the target sea area by using a sub-grid method to obtain the characteristic wave height and periodic space-time distribution of the target sea area. According to the method, the calculation efficiency can be guaranteed, the wave transmission characteristics of the hedge shrub dam are considered, and the influence of construction of the hedge shrub dam on the wave hydrodynamic environment field can be accurately simulated.

The invention provides a multi-mode adaptive wave simulation control system and method for a deep sleep physiotherapy cabin. Belongs to the technical field of fluid mechanics and health intervention. The method comprises the steps that multi-modal physiological parameter collection is conducted on a user on a deep sleep physiotherapy cabin, a real-time physiological data set is generated, the current sleep stage of the user is deduced through a time-frequency analysis and machine learning model on the basis of the data set, a sleep stage label is generated, a pre-trained wave mode generator is dynamically called according to the sleep stage label, and the deep sleep physiotherapy cabin is obtained. An initial set of wave parameters matching the current sleep stage is generated. By sensing the physiological state of the user in a non-contact mode, deducing the sleep stage and dynamically generating and adjusting the wave modes such as sleep guiding and deep sleep maintaining, water fluctuation accurately adapts to the physiological requirements of the user in different sleep stages, a traditional static wave mode is abandoned, highly-personalized sleep adjusting experience is provided for the user, and the sleep quality is effectively improved.

The invention relates to an explosive wave simulation shock tube auxiliary device and a working method, and provides a large explosive wave simulation shock tube opening sparse wave dynamic elimination device and method in order to solve the problem that the accuracy of a test result is reduced due to the fact that an existing shock tube sparse wave elimination device cannot eliminate interference of sparse waves on the test in real time. The eliminating device comprises an eliminating device body (5) and a feedback control system. The eliminating device is arranged at a tube opening of a low-pressure section of the shock tube. The eliminating device comprises a frame, X fan blades arranged on the frame and Y partition plates vertically arranged, X is larger than or equal to 1, and Y is larger than or equal to 0. The fan blades are arranged in rows, the number of the fan blades in each row is equal, fan blade rotating shafts are arranged on the two sides of each fan blade, each fan blade rotating shaft is connected with one transmission structure, and each fan blade is arranged between every two adjacent partition plates or between one partition plate and the inner side wall of the frame. Each transmission structure and the corresponding fan blade rotating shaft are used for controlling the rotating angle of the corresponding fan blade.

The invention relates to the technical field of wave simulation generation, in particular to a high-gravity field wave simulation method. The high-gravity field wave simulation method comprises the following steps: in a high-gravity field, performing similarity rate verification on a high-gravity field wave making similarity relationship between a predetermined wave height and a frequency dimensionless quantity; under the condition that the similarity rate verification is consistent, calibrating parameters of the super-gravity field wave making similarity relationship; and according to the super-gravity field wave making similarity relationship of the calibration parameters, performing super-gravity field wave simulation. According to the invention, waves in different environments in a super-gravity field can be accurately simulated, a transfer function can be accurately constructed, and the influence of physical quantities such as different motion amplitudes, different frequencies and different gravitational accelerations on wave making can be accurately evaluated.

The invention relates to the technical field of electromagnetic pulse radiation simulation, in particular to a Split-type bounded wave electromagnetic pulse simulator and a design method and application thereof. The Split-type bounded wave electromagnetic pulse simulator comprises a pulse source, and a bounded wave simulation antenna and a load which are connected with the pulse source in sequence; the bounded wave simulation antenna is a plurality of metal wires which are connected in parallel, and comprises a simulator front cone section, a distributed load connecting piece and a Split type tail end bifurcated structure which are sequentially connected with a pulse source; and the load is connected to the tail end of the Split type tail end bifurcated structure. A parallel section of a traditional simulator is omitted, a tail end matched load adopts a Split type tail end bifurcated structure, high-frequency and low-frequency reflection of electromagnetic waves propagating in the simulator is effectively reduced, high-frequency response of the simulator is improved, the high-frequency upper limit of the simulator is improved, distortion of the tail end reflection to a working space electric field waveform trailing edge is basically eliminated, and the stability of the simulator is improved. The problems that in the prior art, a bounded wave electromagnetic pulse simulator is insufficient in high-frequency response and tail end reflection causes work space electric field waveform distortion and the like are solved.

The invention discloses an explosive wave simulation device and method based on gas combustion driving, and solves the problems that in the prior art, electric heating energy consumption is large, a gas detonation method generates detonation waves and an extremely high pressure peak value, the waveform of shock waves is affected, and pressure bearing of equipment is challenged. The explosive wave simulation device based on gas combustion driving comprises a combustion driving section, a contraction and expansion section, a driven section, an ignition device arranged on the combustion driving section and a diaphragm arranged between the driving section and the contraction and expansion section. Combustible mixed gas is contained in the combustion driving section, a shape adjusting cushion block is embedded in one end of the combustion driving section, the radial sectional area of the inner space of the shape adjusting cushion block is sequentially increased from one end to the other end in the axial direction, and the other end of the combustion driving section is connected with the inlet end of the contraction and expansion section. An ignition opening is formed in the combustion driving section; the outlet end of the contraction and expansion section is connected with the opening end of the driven section; an ignition head of the ignition device penetrates through the ignition opening; and the driven section is used for installing to-be-tested equipment.

The invention provides a wave simulation method and device, terminal equipment and a medium, and the method comprises the steps: constructing a dynamic model of deep sea operation equipment, and constructing a turbulence model used for describing the motion characteristics of seawater fluid in the water outlet process of the deep sea operation equipment; performing grid division on a fluid domain where the deep sea operation equipment is located to obtain a plurality of fluid grids, and determining a multi-phase hybrid grid from the plurality of fluid grids based on a VOF model; numerical waves are manufactured based on the five-order Stokes theory, and for each fluid grid in an absorption area in a fluid domain, a damping source item is introduced into a momentum equation corresponding to the fluid grid to eliminate reflected waves generated by the boundary of the numerical water tank; based on the overshoot grid model, the acting force of the multi-phase mixed grid on the deep-sea operation equipment in the water outlet process is calculated, and the traction force needed by water outlet of the deep-sea operation equipment is determined according to the acting force. The water outlet simulation effect of the deep sea operation equipment can be improved.

The present invention relates to the field of detonation wave simulation and calculation. Specifically, it relates to a multifunctional calculation method for detonation wave propagation that integrates data and physical information, suitable for solving various detonation wave propagation scenarios. This method constructs a fully connected neural network by acquiring the position coordinates of sample points and known physical information. This physical information includes the detonation time governing equations, boundary conditions, and propagation direction patterns. Based on this known physical information and other known conditions provided by different scenarios, a total residual is established. By iteratively solving the total residual minimum problem through an optimization algorithm, solutions for different scenarios are achieved, and the solution accuracy meets application requirements.

The invention discloses a typhoon wave field simulation method, device and equipment and a medium, and relates to the technical field of typhoon wave simulation, and the method comprises the steps: employing a polar coordinate grid to track the typhoon center of a target typhoon, and the typhoon center is the polar coordinate origin of the polar coordinate grid; constructing a typhoon forced field for each wave ray in the polar coordinate grid, and determining a reference wind speed on the corresponding wave ray according to the typhoon forced field; constructing a typhoon wave field model by adopting a two-dimensional wave ray theory parameterized model; on the polar coordinate grid, solving the typhoon wave field model based on an initial field to determine the sea wave spectrum peak frequency, the sea wave main wave direction and the sea wave energy which change along with time on each wave ray; the initial field comprises the reference wind speed, the sea wave spectrum peak frequency, the sea wave main wave direction and the sea wave energy of each grid point at the initial moment, and the grid point is the central point of the corresponding grid. According to the invention, the forecasting speed of the typhoon wave field data is improved.

The present invention discloses a maintenance method and experimental device for preventing quicksand on a coastal beach, relating to the technical fields of coastal ecological restoration and beach maintenance engineering. First, a water absorption module is arranged below the sand layer of a beach simulation system. The water absorption module's pumping action forms an unsaturated zone in the sand layer near the module. Then, during the water absorption process of the module, tidal and wave simulations are performed on the beach simulation system. Finally, the effectiveness of the quicksand prevention experiment is determined based on the water absorption effect of the absorption module and the state of the sand layer of the beach simulation system. The beach simulation system includes a wave-making section, an experimental section, and a wave-absorbing section, which are sequentially connected and arranged. The absorption module includes a water absorption pipe laid below the sand layer, the water absorption pipe having a water absorption hole and being connected to a pump. The present invention can fully simulate the quicksand phenomenon and solution of beaches under natural conditions, providing experimental conditions close to reality for research.

The application discloses a kind of floating photovoltaic array aerodynamic performance wind tunnel test platform and method, including platform main body, platform main body includes wind field simulation area and experimental test area;Wave simulation device is provided in the front section of the incoming flow direction in wind field simulation area;Floating photovoltaic array model and six degrees of freedom floating platform are provided in experimental test area;Floating photovoltaic array model is fixed on six degrees of freedom support platform of six degrees of freedom floating platform;Pitot tube is arranged in experimental test area, and pitot tube is installed on telescopic support.The application can simulate real complex wind field environment on sea and the multiple degrees of freedom change of floating photovoltaic array by the platform and method, and also can obtain the dynamic response data of photovoltaic panel under different working conditions Real-time measurement provides scientific basis for the design optimization and wind resistance performance improvement of offshore floating photovoltaic platform.

The invention relates to the technical field of wave simulation, and discloses a wave simulation method, device and equipment based on a triangular numerical wave flume and a medium, and the method comprises the steps: constructing a right triangle computational domain, carrying out the grid division of the right triangle computational domain, setting the top boundary of the right triangle computational domain as a pressure outlet, and carrying out the calculation of the pressure outlet; setting the horizontal right-angle side, the vertical right-angle side and the inclined side as speed inlets; loading theoretical velocity vectors of the wave water quality points to velocity inlets corresponding to the horizontal right-angle side, the vertical right-angle side and the inclined side; constructing a wave simulation model, and superposing a momentum source item in the wave simulation model; the momentum source item adjusts a difference value between a wave theoretical velocity solution and a current flow field numerical solution through a weighting function; and carrying out iterative solution on the wave simulation model, and outputting and updating the wave surface elevation and flow field velocity distribution in the right triangle calculation domain. According to the invention, the problem of serious reflection interference at the lateral boundary can be reduced, and the calculation efficiency is improved.

The invention relates to the technical field of ocean wave monitoring, in particular to an intelligent sea condition compensation method based on machine learning, which corrects an error generated by a buoy motion condition under a high sea condition, which cannot be simulated by a rotary wave simulation test board adopting sine waves as an excitation source, through a large-scale wave flume extreme working condition test. A buoy wave measurement data compensation method in a severe environment is researched, and the buoy measurement data precision is improved.

This invention relates to the field of wave simulation technology, and discloses a wave simulation method, apparatus, equipment, and medium based on a triangular numerical wave flume. The method includes constructing a right-angled triangular computational domain, meshing the right-angled triangular computational domain, setting the top boundary of the right-angled triangular computational domain as a pressure outlet, and setting the horizontal right-angled side, vertical right-angled side, and inclined side as velocity inlets; loading the theoretical velocity vector of wave water particles onto the velocity inlets corresponding to the horizontal right-angled side, vertical right-angled side, and inclined side; constructing a wave simulation model and superimposing a momentum source term within the wave simulation model; adjusting the difference between the theoretical velocity solution of the wave and the current numerical solution of the flow field through a weighting function of the momentum source term; iteratively solving the wave simulation model, and outputting and updating the wave surface elevation and flow field velocity distribution within the right-angled triangular computational domain. This invention can reduce the problem of severe reflection interference at the lateral boundary and improve computational efficiency.

The application relates to a three-dimensional abnormal wave synchronous coupling generation system, method and medium in cross sea conditions, and belongs to the technical field of ocean engineering. The application comprises a parameter calculation module, a wave system coupling module configured to generate a three-dimensional abnormal wave in a physical space position based on coupling growth characteristics between wave systems and expected generation; a scene adaptation module configured to convert a wave number spectrum into a spatial wave surface form for a numerical simulation scene, and perform wave evolution simulation; and a wave making control module configured to convert a processed time sequence into a motion control signal of a wave making device according to driving characteristics of the wave making device, and drive the wave making device to generate the three-dimensional abnormal wave. The application realizes energy efficient focusing through coupling modulation instability, accurately controls the spatial form of the three-dimensional abnormal wave, simultaneously adapts numerical simulation and physical test scenes, and meets diversified demands of ocean engineering on extreme wave simulation.

The invention discloses a seismic wave field simulation method and system in an attenuation medium. A new constant Q viscous sound wave equation is constructed to accurately meet the dispersion relation of the Kjartansson constant Q theory, and an amplitude attenuation item and a phase dispersion item are subjected to explicit separation, so that complete decoupling of attenuation and dispersion can be realized while the theoretically accurate constant Q dispersion relation is kept, and the frequency dispersion accuracy is improved. And solving a constant Q viscous acoustic wave equation through a generalized pseudo-spectral numerical simulation method based on space Fourier transform to obtain a seismic wave field with spatio-temporal variation, so that the precision of viscous acoustic wave simulation is remarkably improved.

The invention discloses a programmable Josephson voltage step wave simulation device and method, and belongs to the field of power electronic simulation, the programmable Josephson voltage step wave simulation device comprises a synchronous dynamic random access memory module, a DSP processor module and a DAC conversion module; the DSP processor module is used for calculating a waveform value corresponding to the Josephson step wave to be generated and transmitting the waveform value to the synchronous dynamic random access memory module; the synchronous dynamic random access memory module is used for storing the received waveform value; the DSP processor module is also used for reading a waveform value corresponding to the Josephson step wave to be generated from the synchronous dynamic random access memory module and transmitting the waveform value to the DAC conversion module; and the DAC conversion module is used for converting the waveform value into a corresponding analog waveform and outputting the analog waveform, so that the problems that the programmable quantum alternating-current voltage trapezoidal wave cannot be simulated and the waveform can only be generated by using a physical system in the prior art can be solved.

The present invention discloses an intelligent reconstruction and prediction system and method of a three-dimensional wave field in a real ocean environment, which belongs to the field of marine engineering technology, and includes an unmanned aerial vehicle image capture module, an image preprocessing module, a feature recognition and parameter extraction module, a low-contrast and high-noise image processing module, a wave crest and trough recognition module, a wave characteristic analysis module, a wave characteristic analysis and prediction module, an unmanned aerial vehicle position adjustment module, and a wave simulation and evolution module. By integrating advanced image processing technology and artificial intelligence algorithms, the spatial wavefront resolution of free waves and high-order bound waves is improved, and accurate three-dimensional wave fields are synthesized by synchronous superposition. It is possible to use multiple high-altitude unmanned aerial vehicles in real time to collect wavefront images and perform wave feature recognition and parameter extraction under various sea conditions, and effectively realize the three-dimensional reconstruction of near-field, mid-field and far-field wavefronts in the ocean based on the wave evolution physical control equation.

The invention discloses a seabed data cabin stability experiment device and method under a complex underwater power condition, and a power simulation system comprises a wave simulation device, an ocean current simulation device and an earthquake simulation device, and is used for simulating the coupling effect of various power loads in a real ocean environment; a seabed soil body is laid in the experimental water tank so as to simulate physical and mechanical characteristics of a seabed soil layer in a real marine environment; a sensor is arranged on the surface of the data cabin model, and the data cabin model is arranged in the experimental water tank and is used for monitoring stress and deformation conditions of the data cabin model under the action of dynamic load in real time through the sensor; the measurement and control system is used for synchronously collecting excitation characteristics of various dynamic loads and stress and deformation data of the data cabin model, and performing parameter adjustment and closed-loop control on the dynamic simulation system; the device is used for simulating the structural stability of the seabed data cabin under the action of complex dynamic loads such as waves, ocean currents and earthquakes, and scientific basis and technical support are provided for design, construction and protection of the seabed data cabin.

The invention discloses an offshore single-pile fan hydraulic physical model system and a simulation method thereof, and solves the problems that the existing numerical simulation boundary conditions are simplified too much, and a small-scale physical model test is difficult to meet a dynamic similarity criterion, so that simulation distortion is serious. The invention designs and establishes a large-scale offshore single-pile fan hydraulic physical model system. The model integrates a sea wind simulation device, a wave simulation device, an ocean current simulation device and a fan vibration simulation device. Single-load and multi-load coupling tests are respectively carried out, vibration acceleration data are acquired by utilizing a sensor array arranged along the height of the tower drum, and high-precision fitting is carried out on the distribution rule of the vibration acceleration along the height by adopting a quadratic polynomial, so that the vibration characteristics of the tower drum under the action of different loads are systematically revealed; and reliable test data support is provided for safety design and fatigue analysis of the offshore single-pile type fan supporting structure.

The seawater corrosion detection device for the stainless steel pipe comprises a test pool, the test pool comprises a pool body, one side of the upper part of the pool body is fixedly connected with a synchronous clamping assembly, the synchronous clamping assembly is used for clamping a detected workpiece, and the inner wall of one end of the pool body is provided with a sea wave simulation assembly; the sea wave simulation assembly comprises a turning plate mechanism and a sea wave driving mechanism, the turning plate mechanism comprises at least one turning plate, a rotating shaft of the turning plate is hinged between mounting plates on the two sides of the turning plate, and each mounting plate is fixedly connected with the inner wall of one end of the pool body; the sea wave driving mechanism is connected with the overturning plate and can provide driving force for rotation of the overturning plate relative to a rotating shaft of the overturning plate. Compared with the prior art, the device has the technical effects that the device is provided with the turning plate mechanism, the movement of sea waves can be simulated, vivid detection working conditions can be given, and the test accuracy can be improved.

The utility model belongs to the field of marine ecological environment engineering. The experimental device for monitoring the hydrodynamic shear stress of the mangrove forest comprises a water tank and a display, seawater is contained in the water tank, a simulated mud flat is arranged on one side in the water tank, mangrove seedlings are planted on the simulated mud flat, a force sensor is installed beside a mangrove seedling model, and the force sensor is connected with the display. A wave simulation mechanism is arranged on the other side, opposite to the simulation mud flat, of the water tank; the wave simulation mechanism comprises a mounting plate arranged at the top of the water tank, a driving motor is arranged on the mounting plate, an output shaft of the driving motor is connected with a telescopic rod, the end part of the telescopic rod is connected with a wave shifting plate, and the wave shifting plate is used for driving the wave shifting plate to move in the water tank along the length direction of the water tank so as to simulate waves; an adjusting switch is arranged on the driving motor; the display is mounted on one side of the exterior of the water tank; and the display is electrically connected with the force sensor. The device can repeatedly simulate the situation that tidal water scours the mud flat in a laboratory and record the shear stress generated on the mangrove seedlings.

The application discloses a pressure type wave measuring instrument metering calibration device and method, relates to the technical field of hydrological measuring instrument calibration, and comprises the following steps: a wave simulation device drives a lifting platform to make periodic lifting movement according to a set wave height and a wave period, wave height measurement values of the pressure type wave measuring instrument and water depth measurement values of an echo sounder are collected; the water depth measurement values are converted into water depth standard values according to a correction value fitting function of the echo sounder; wave height standard values are calculated from the water depth standard values of each period, and an arithmetic average value is obtained as a standard wave height; the wave height measurement values are subjected to arithmetic averaging, and the difference between the arithmetic average value and the standard wave height is a wave height indication error. The lifting platform is driven to move again, a time interval corresponding to adjacent wave crests or troughs collected by the pressure type wave measuring instrument is taken as a wave period measurement value, a time interval corresponding to adjacent movement turning points of the lifting platform is taken as a wave period standard value, arithmetic average values are respectively obtained, and a difference value is taken as a wave period indication error.

The utility model relates to the technical field of photography, in particular to a dynamic water simulation device for photography. The device comprises a shooting field, an LED screen, a water pool and a camera, the LED screen is arranged in the shooting field, the water pool is arranged in the middle of the shooting field, the camera is arranged right opposite to the LED screen, the device further comprises a wave simulation device and a vortex simulation device, the wave simulation device is arranged at the edge of the water pool, and the vortex simulation device is arranged in the middle of the water pool. According to the product, the visual effect and authenticity of shooting are enhanced mainly by simulating the dynamic effects of water such as waves and vortexes, wide application prospects are achieved, the shooting efficiency can be improved, the cost can be reduced, and the safety and stability of the shooting process are guaranteed.

The invention relates to a synchronous coupling generation system and method for three-dimensional abnormal waves in cross sea conditions and a medium, and belongs to the technical field of ocean engineering. Comprising a parameter calculation module; the wave system coupling module is configured to combine with a physical space position for generating a three-dimensional abnormal wave based on coupling growth characteristics between wave systems; the scene adaptation module is configured to convert a wave number spectrum into a spatial wave surface form for a numerical simulation scene and perform wave evolution simulation; and the wave making control module is configured to convert the processed time sequence into a motion control signal of the wave making equipment according to the driving characteristics of the wave making equipment, and drive the wave making equipment to generate three-dimensional abnormal waves. Efficient energy focusing is achieved through coupling modulation instability, the spatial form of three-dimensional abnormal waves is accurately controlled, meanwhile, numerical simulation and physical test scenes are adapted, and the diversified requirements of ocean engineering for extreme wave simulation are met.

The invention discloses a coastal sand beach quicksand prevention maintenance method and an experimental device, and relates to the technical field of coastal ecological restoration and beach maintenance engineering.The method comprises the steps that firstly, a water absorption module is arranged below a sand layer of a sand beach simulation system, and an unsaturated area is formed in the sand layer near the water absorption module through the water pumping effect of the water absorption module; then in the water absorption process of the water absorption module, tide simulation and wave simulation are carried out on the sand beach simulation system in a matched mode; and finally, according to the water absorption effect of the water absorption module and the sand bed state of the sand beach simulation system, the anti-quicksand experiment effect is judged. The sand beach simulation system comprises a wave-making section, an experiment section and a wave-eliminating section which are sequentially communicated and arranged; the water suction module comprises a water suction pipe laid below the sand layer, water suction holes are formed in the water suction pipe, and the water suction pipe is connected with a water suction pump. The sand drifting phenomenon and the solution of the sand beach under the natural condition can be comprehensively simulated, and the experiment condition close to the reality is provided for research.

The utility model relates to an auxiliary device for simulating a shock tube by explosive waves, in particular to a shock tube sparse wave eliminating device capable of weakening self-reflected waves, and aims to solve the problem of inaccurate experimental data caused by the fact that sparse waves generated at the orifice of a shock tube are transmitted back to the upstream during an experiment. The device comprises a circular wave absorbing plate arranged at a tube opening of an explosive wave simulation shock tube; a central wave absorbing hole and at least three edge wave absorbing holes are formed in the wave absorbing plate; the central wave absorbing hole is located in the center of the wave absorbing plate, and the at least three edge wave absorbing holes are evenly distributed around the circumference of the central wave absorbing hole. The utility model can effectively weaken the peak value of the backflow reflection wave of the shock wave in the experiment and improve the experiment precision.