1137results about "Hydrodynamic testing" patented technology

The invention provides an ocean intelligent forecasting large model construction method, and relates to the field of ocean forecasting, and the method specifically comprises the following steps: obtaining multi-source ocean observation data, and constructing a high-resolution ocean analysis data set which is subjected to quality control, space-time registration, standardization and data set division processing through multi-source observation data fusion and numerical mode assimilation; constructing a basic prediction model, and performing multi-scale fusion on the frequency domain enhanced features and the spatial local features by using the basic prediction model; the trained basic prediction model is operated in a set area range, and an output result of the basic prediction model is recovered to an original physical quantity value through inverse standardization; and comparing the rolling output of the basic prediction model with observation data or a high-resolution mode result through a correction module, learning an error, outputting a correction quantity, and superposing the correction quantity with an original prediction result to obtain a prediction field. According to the technical scheme, the problem that the ocean forecasting model in the prior art cannot meet the requirement of a complex application scene is solved.

The invention relates to a saline intrusion measurement method, system and equipment based on dynamic ship motion conditions and a medium, and aims to solve the technical problem that the salinity inversion precision is reduced due to spatial-temporal dislocation between particle image velocity measurement flow field data and plane laser-induced fluorescence concentration field data caused by ship six-degree-of-freedom motion. According to the method, future poses are predicted by collecting ship motion parameters and environment disturbance parameters, and space-time compensation parameters are generated in combination with a static calibration matrix; performing three-dimensional coordinate transformation and time synchronization on synchronously acquired original flow field and concentration field data by applying compensation parameters, and eliminating space-time deviation caused by ship movement; a three-dimensional salinity distribution field is calculated based on registration data fusion flow field diffusion characteristics and concentration field distribution; and meanwhile, the pose of the measuring equipment is dynamically adjusted through the closed-loop controller so as to optimize the data acquisition quality. According to the method, ship motion interference is effectively inhibited, and accurate characterization of saline invasion frontal surface spatial characteristics is guaranteed.

The invention discloses an indoor water tank sediment pushing characteristic acquisition system and method, the system mainly comprises a water tank main body, a buffer unit, a drainage adjusting unit, a sediment throwing device, an imaging unit, an adjustable support and a data processing unit, and according to the method, non-contact data acquisition is carried out through a high-definition camera and a three-dimensional terrain measuring instrument; automatic identification, parameter extraction and migration speed calculation of landforms such as sand waves are achieved, the sediment bed surface is not touched in the whole process, damage to the bed surface form caused by traditional contact type measurement is eliminated, and the authenticity and reliability of data are ensured. Meanwhile, the buffer design of the combination of the flow slowing plate and the multi-stage water baffle is adopted, the kinetic energy of water flow is effectively dissipated through the graded water outlet structure, the impact force of injected water flow is greatly reduced, the bed surface is prevented from being scoured in the initial water injection stage, and the stability of the initial test condition is powerfully protected.

The invention discloses a high-voltage direct-current submarine cable test system and method, and relates to the field of high-voltage direct-current submarine cable test, and the method comprises the steps: constructing a simulated seabed test space with a multidirectional water flow impact device, and arranging a curvature adjustment mechanism capable of actively changing the bending form of a submarine cable sample; collecting submarine cable insulation layer temperature and bending form data in real time in a test process under a simulated seabed test space condition, dynamically establishing an association relationship between the two data, and tracking the association relationship to a limit state; through collaborative analysis of temperature gradient distribution and charge peak-to-valley ratio characteristics, the safety boundary and the limit failure state of the submarine cable are judged through continuous growth of the temperature gradient and synchronous deterioration of the charge peak-to-valley ratio in combination with indexes such as outer sheath carbonization and temperature difference sudden change. The comprehensive evaluation of the performance of the submarine cable under the extreme condition is realized, and a powerful technical guarantee is provided for improving the reliability and the safety of a cable system.

The invention relates to the technical field of electronic component rain test, and discloses electronic product waterproof test equipment, which comprises a test box body, a cylinder and a water pipe, a turntable is arranged in the test box body, a rotating shaft is mounted on the turntable, a cavity is formed in the test box body, and a servo motor is fixedly mounted in the cavity. An electric push rod is fixedly mounted at the output end of the servo motor, and an electronic component is further arranged on the turntable; a support is fixedly installed in the test box body, a water storage frame rotationally connected with the support is installed on the support, and a wave making mechanism is further arranged in the water storage frame. According to the electronic product waterproof test equipment, through the collaborative design of a triangular arc-shaped protruding block and a wave making floating body, a soaking test is upgraded from static water level simulation to dynamic wave impact; the arc-shaped protruding blocks intermittently impact the rolling wheels, rapid resetting of the floating body is achieved through the spring mechanism, the dynamic hydraulic action of water fluctuation on electronic components in the natural environment can be reproduced, and the limitation that traditional equipment can only achieve static soaking is overcome.

The invention relates to a tide level obtaining method and system based on an OWC wave energy conversion device. The method comprises the following steps: constructing an energy loss prediction model in the air chamber; acquiring field incident wave energy, reflected wave energy, water potential energy increment, kinetic energy increment and pneumatic output energy at the current time period; inputting incident wave energy and reflected wave energy into the model to obtain predicted energy loss; and the tide level variation is solved based on the energy conservation relational expression, and the current tide level is calculated. The system comprises an energy loss prediction module, a wave energy acquisition module, a water body energy acquisition module, a pneumatic output acquisition module, an energy loss calculation module, a tide energy solving module and a tide level calculation module, which cooperatively realize the method. According to the scheme, an external tide gauge station is not needed, the local sea area tide level can be inversed in situ, at high frequency and with high precision, the method is suitable for an OWC-breakwater fusion scene, and cooperative operation of a port and ocean energy is supported.

The invention relates to the technical field of trajectory measurement, discloses an underwater riprap particle motion trajectory measurement device and method, and aims to realize high-precision response tracking of stress and motion trajectory of riprap particles around a foundation under dynamic water scouring based on an underwater positioning unit sensing array and a high-frequency sampling particle motion and attitude detection technology. The technical problem that the motion characteristics of a single riprap particle cannot be observed in previous riprap protection research is solved. Through combined measurement of acceleration and angular velocity data collected by the inertial measurement unit and absolute position measured by the radio frequency unit, the three-dimensional motion condition, track and attitude process of a unit space as well as two-dimensional displacement images of a riprap surface and a vertical flow section are accurately reconstructed; and a centimeter-level-precision visual data support and a low-cost research means are provided for foundation scouring and coastal slope protection and riprap protection research, so that the engineering cost is saved.

The utility model discloses a water depth adjusting device of a test pool, and relates to the technical field of deepwater test pools. Comprising a floating bottom body, a lifting mechanism, a jacking device and a distributed detachable platform, each lifting mechanism comprises a winch, a steering pulley and a steel wire rope, one end of the steel wire rope is connected with the winch, and the other end of the steel wire rope bypasses the steering pulley at the bottom of the deepwater experiment pool and is connected with the floating bottom body; the jacking device comprises an air cylinder, a connecting shaft, a guide wheel and a base, the air cylinder located on the base is connected with the guide wheel through the connecting shaft, and the guide wheel is connected with the guide sliding groove of the floating bottom body in a clamped mode; the jacking devices are symmetrically arranged on the two sides of the floating bottom body. The distributed detachable platform is laid on the floating bottom body through the connecting support. The device can meet the water depth requirement in an ocean engineering experiment, meet the ground elevation requirement in a civil engineering experiment and a wind tunnel experiment, and meet the requirement that the floating bottom does not move, rotate or get stuck in the operation process of experimental equipment.

The invention discloses a follow-up PIV boundary layer flow field test system and test method based on electrolytic hydrogen bubbles. The follow-up PIV boundary layer flow field test system comprises an integrated optical measurement module and a tracer particle generation module, the optical measurement module is arranged in the UUV and comprises a laser transmitter assembly, a sapphire prism and two imaging cameras which are symmetrically arranged, and laser sheet light forms a sheet light area on the outer surface of the UUV after being refracted by the sapphire prism; the tracer particle generation module comprises a cathode, an anode and a power supply unit, the cathode is a platinum wire array composed of a plurality of platinum wires arranged in the axial direction of the UUV, and the platinum wires are located at different heights away from the wall face of the UUV; the power supply unit selectively electrifies the platinum wire, independently adjusts the voltage, controls the number and frequency of generated hydrogen bubbles, and achieves the synchronous measurement of flow field information at different thickness positions of a boundary layer. According to the invention, boundary layer flow field in-situ follow-up measurement and synchronous fine measurement of different thickness positions under the condition of not changing the UUV shape are realized, and the device has the advantages of high integration level, small flow field disturbance, high measurement efficiency and the like.

The invention discloses a test device and a test method for acquiring water-touching slip motion data. The test device comprises a wind tunnel test section, a water tunnel test section, a wave absorbing plate and a free supporting mechanism. The wind tunnel test section and the water tunnel test section are horizontally arranged and communicated, the wind tunnel test section is located above the water tunnel test section, and a wave absorbing plate is arranged between the wind tunnel test section and the water tunnel test section. The wind tunnel test section and the water tunnel test section jointly form a two-phase flow field of air and water. The free supporting mechanism is installed on a wind tunnel test section and is connected with the test model. The mode that the model fixes water-gas medium movement is adopted, waves of the water-gas medium are weakened through the perforated wave absorbing plate, simulation of water-gas two-phase flow of the aircraft moving near the water surface is achieved, high-precision and high-repeatability aircraft water touching slippage movement data can be obtained, and the high engineering application value is achieved.

The invention discloses a posture-adjustable underwater vehicle propeller multifunctional testing device and method. In the device, a first guide mechanism and a second guide mechanism which are arranged in parallel extend in the first direction and are both arranged outside one side of the top surface of a water tank in the height direction; one end of the slider mechanism is in sliding fit with the first guide mechanism, and the other end of the slider mechanism is in sliding fit with the second guide mechanism; one end of the posture adjusting mechanism is fixed with a box body mounted on the sliding block mechanism; a first spring and a second spring are installed on the two sides of the box body in the first direction. The other end of the first spring and the other end of the second spring are provided with a first dynamometer and a second dynamometer. The propeller driving module and the other end of the attitude adjusting mechanism are fixed through a fixing piece; propellers are mounted at the output shaft ends of the propeller driving modules; the hydrophone is installed on the side, close to the propeller, of the propeller driving module. The device is simple in structure, convenient to operate and easy to machine and popularize, and compared with a common test system, the device can simulate propeller flow noise characteristics under different working conditions and different postures.

The invention relates to the technical field of test pools, and particularly discloses a deep and shallow pool boundary multi-effect combined component and a test pool. The deep and shallow pool boundary multi-effect combined component comprises a first lifting platform, a first wave absorbing beach, a second lifting platform, a second wave absorbing beach, a supporting platform, a first partition wall and a second partition wall. The first lifting table and the second lifting table are arranged on the side, close to the deep pool, of the shallow pool in a lifting mode. The first wave absorbing beach is arranged on the first lifting platform; the second wave absorbing beach is arranged on the second lifting platform; the supporting table is arranged between the first lifting table and the second lifting table; the first partition wall and the second partition wall are arranged on the supporting table in a turnover mode. According to the scheme, the first wave absorbing beach and the second wave absorbing beach can independently ascend and descend, meanwhile, the first partition wall and the second partition wall can independently turn over, dependence on large equipment can be reduced, the test efficiency can be improved, and the diversity of test working conditions can be improved.

The invention discloses a device and a method for acquiring a water tank experiment sedimentary profile based on a frozen profile technology, and belongs to the technical field of sedimentology and experimental simulation, and the device and the method are characterized in that stable freezing extraction of the sedimentary profile in a water tank is realized through a wedge-shaped freezing device. The device is internally provided with a liquid nitrogen channel and is provided with an external control interface, and a section freezing state can be kept by injecting liquid nitrogen in batches, so that a complete sedimentary section sample is obtained. Meanwhile, the invention provides a corresponding profile acquisition method, and emphasizes speed control, friction force control, liquid nitrogen injection rhythm and pull-out stability of the insertion device, so as to ensure that an undisturbed frozen profile sample is acquired. According to the method, disturbance to a sedimentary body structure can be remarkably reduced, and the precision and analysis efficiency of profile data are effectively improved, so that reliable technical support is provided for source-sink system and sedimentary geomorphology research.

The invention provides a spinach cleaning quality detection method based on image recognition, and relates to the technical field of image or video recognition. A closed-loop control framework integrating active detection, cross-modal sensing, physical modeling decoupling and intelligent decision optimization is constructed; cleaning efficiency and quality bottlenecks caused by single information dimension and passive control mode in the prior art are fundamentally solved; the self-adaptive cleaning device has the final beneficial effects that the energy consumption and the water consumption of a unit product are greatly reduced by precisely putting water flow energy according to requirements while the cleaning cleanliness stability under complex working conditions is remarkably improved, and self-adaption and self-optimization of the whole cleaning process are realized.

A method for detecting wave vortex coupling and vortex-induced resonance phenomena in a stirring reactor comprises the following steps: 1) simulating the stirring reactor, and collecting velocity field data in the stirring reactor, torque data of a stirring paddle and average stress data; 2) decomposing the torque data and the average stress data; 3) obtaining a Q criterion trailing vortex structure of a rotation domain based on the velocity field data; 4) determining a mapping relation between the torque data and the Q criterion trailing vortex structure and a mapping relation between the Q criterion trailing vortex structure and the average stress data; 5) stirring by using the stirring reactor, and collecting actual torque data in the stirring process; 6) determining an actual Q criterion trailing vortex structure through the actual torque data; determining actual average stress data through an actual Q criterion trailing vortex structure; and 7) predicting the torque data and the service life of the stirring paddle at the next moment by using the artificial intelligence chaos controller. According to the invention, detection of wave vortex coupling and vortex-induced resonance phenomena in the stirring reactor is realized.

The invention relates to the technical field of test pools, and particularly discloses a multi-working-condition test working platform of a deep and shallow combined pool, which comprises a pool main body, a middle partition wall, a first crossing frame, a second crossing frame and a track, the pool main body comprises a first pool body and a second pool body; the first tank body and the second tank body have different depths, or the depth of at least one of the first tank body and the second tank body can be changed; the first tank body and the second tank body are arranged along a first direction and are communicated with each other; the track is arranged on the side of the pool body in the second direction, and the track crosses the pool body in the first direction; the second direction is perpendicular to the first direction; the first crossing frame and the second crossing frame can be arranged on the track in a sliding mode and cross the pool body in the second direction. In the scheme, the first spanning frame and the second spanning frame spanning the pool main body can perform wind field simulation, model dragging and observation personnel and equipment carrying, and cooperate with the pool main body to perform tests under various working conditions.

The invention relates to the technical field of ocean engineering experiments, and discloses a high-precision sand wave form capturing device for an offshore sand wave migration experiment, which comprises a wave water tank, a sand wave form high-precision monitoring system, a flow field synchronous measurement system and a data acquisition and processing system, a sand bed is arranged in the wave water tank, the sand wave form high-precision monitoring system comprises a terrain scanning subsystem and an image acquisition subsystem, and the data acquisition and processing system is used for synchronously acquiring, processing and fusing terrain scanning data, image data and flow field data. Through the sand wave form high-precision monitoring system, the flow field synchronous measurement system and the data acquisition and processing system, the sand wave form is accurately captured, the evolution of the flow field and the sand wave is synchronously monitored, and a coupling mechanism of the flow field and the sand wave is revealed through data fusion analysis; the experimental design is rigorous and controllable, the influence of multiple factors can be systematically researched, and a reliable basis is provided for ocean engineering anti-scouring design.

The invention relates to an open boundary circulating flow and reconfigurable terrain collaborative maritime work scouring intelligent test system and test method, a maritime work structure test model is installed at the center position of a main body structure inner cavity test section, and a set area with the maritime work structure test model as the center is used as a main test section; the open-boundary circulating flow generation system realizes back supplement and closed-loop operation of circulating water channels of the left bank and the right bank; a multi-beam three-dimensional terrain scanner is installed on the side portion of the large-span electric measuring bridge system, and sand bed terrain and scour pit three-dimensional shape data are obtained; a three-dimensional acoustic Doppler current meter and a capacitive wave height meter are installed on the track type instrument bridge measuring system, and multi-dimensional dynamic monitoring is conducted on the sand bed terrain and the scouring pit; the multidirectional irregular wave generation system is used for simulating regular waves and irregular waves in an offshore environment. According to the invention, the aspects of structure scale, terrain coupling and measurement and control feedback intelligence are comprehensively upgraded, and a more real and reliable test basis with strong engineering adaptability is provided for research on scouring stability of major ocean engineering.

The application relates to the technical field of calculation simulation of ship hull propulsion research, in particular to a simulation model convenient for hydrodynamic calculation of a full-rotation double-propeller ship, which comprises a plurality of groups of water pressure sensors arranged on the circular arc outer wall of a detection column and facing openings, a drainage long groove arranged on the circular arc outer wall of the detection column and located at the openings, a water inlet pipe of an external water pump assembly arranged in the detection column, and a lifting port arranged at one end of the water inlet pipe and capable of sliding along the drainage long groove to adjust the height, wherein the beneficial effects are that the water flow direction and flow rate in the pool model are accurately controlled through water pumping and high-pressure water inflow in the symmetrical direction, the data detection range of the test is improved, the simulation equipment provided with the water pressure sensors and the displacement sensors is arranged, so that the data in the test process can be conveniently collected, the position of the simulation small ship can be accurately collected through the coordinates established by the transparent grid plates, and the test accuracy is greatly improved.

The invention discloses a deepwater bidirectional flow generation system, which relates to the technical field of pool flow field simulation and comprises a pool body and a bidirectional flow generation device. The bidirectional flow making device comprises a plurality of bidirectional flow making assemblies which are stacked in the depth direction of the pool body; the bidirectional flow making assembly comprises a plurality of circulating pipes; the plurality of circulating pipes are arranged in an array in the same horizontal plane perpendicular to the depth direction; each circulating pipe is connected with the pool body to form a circulating pipeline; a two-way water pump is mounted on each circulating pipe; and a steering flow guide structure is mounted at the corner position in each circulating pipe. According to the design, the problems of non-uniform flow field distribution and small effective area in a traditional mode are effectively avoided, and the same quality of flow fields in two directions can be ensured in bidirectional flow generation. And the steering flow guide structure is used for conducting flow guide at the corner position, and the problem of huge energy loss caused by a pressure perforated wall in a traditional mode is solved.

The invention discloses a non-contact method for measuring a three-dimensional flow velocity field in a pipeline based on acoustic Doppler, and the method comprises the steps: transmitting a focused sound beam into the pipeline, receiving an echo signal reflected by a scatterer in fluid, and generating a Doppler echo signal set covering different angles and depth positions; performing pulse compression and time-frequency analysis on the Doppler echo signal set, and calculating the sight flow velocity component of each point along the sound beam direction; calculating a three-dimensional flow velocity vector of each sampling point based on the coordinate position of each space sampling point and the corresponding sight line flow velocity component, and realizing decoupling of the flow velocity direction and size; according to the spatial distribution of the three-dimensional flow velocity vector on the section of the pipeline, a three-dimensional flow velocity field model in the pipeline is generated through interpolation fitting, and section flow and flow state characteristic parameters are calculated according to the model. According to the embodiment of the invention, the limitation that only two-dimensional or one-dimensional flow velocity can be measured in a traditional method can be broken through, and the spatial resolution and measurement precision of flow velocity field reconstruction in a complex flow state are improved.

The invention discloses a throttling device movable high-temperature and high-pressure hydrodynamic test system and method, and belongs to the field of high-temperature and high-pressure hydrodynamic tests. The system comprises a cold module, a hot module and a test section module which are connected into a circulation loop through detachable pipelines. The cold module provides and drives a working medium; the heat module comprises a heat regenerator and a preheater, and preheating is carried out by utilizing residual heat of a working medium after the test, so that energy conservation is realized; the parallel flow channel design is adopted in the test section module, and a plurality of throttling device test pieces can be installed at the same time for synchronous testing. The problem that a traditional test bed is heavy and cannot be moved is solved through modular design, the test efficiency and energy efficiency are greatly improved through parallel test and efficient heat recovery, a test system can be conveniently deployed on site, high-precision and batch hydrodynamic characteristic calibration is conducted on multiple throttling elements under the highest pressure of 25 MPa and the flow of 1.2 t / h, and the test bed is suitable for large-scale popularization and application. And rapid research, development and verification of key equipment in the fields of nuclear energy, heat energy and the like are effectively supported.

The invention relates to the technical field of ice engineering measurement, and discloses an ice pool underwater special-shaped structure icebreaking load simulation test method comprising the following steps: test preparation: carrying out test preparation, and attaching a flexible pressure sensor array to the surface of an underwater test piece; data acquisition: synchronously acquiring data acquired by the flexible pressure sensor array in the icebreaking process; and data processing: reconstructing the data acquired by the flexible pressure sensor array by adopting a hybrid interpolation algorithm based on physical constraint and adaptive weight to obtain a simulated icebreaking evolution track. According to the method, the precision and reliability of ice load reconstruction are remarkably improved, and the method is particularly suitable for identification and analysis of local peak load on the surface of a special-shaped structure.

The invention discloses a wind wave flow-earthquake coupling load simulation device and method for an offshore wind power system, and relates to the technical field of offshore wind power. The device comprises a comprehensive simulation platform, a model installation area and a data acquisition and monitoring system, wherein the comprehensive simulation platform cooperatively simulates a wind wave flow and an earthquake coupling load through a rectangular water tank, a vibration table system, a wave maker system and a water flow driving device; the model installation area is provided with special installation structures matched with multiple types of foundations such as pile foundations and jacket foundations, and multiple types of sensors are arranged in a matched mode. And the data acquisition and monitoring system realizes data acquisition, analysis and image recognition. According to the method, system safety evaluation is completed through model preparation, coupling load application and data acquisition and analysis. The problems that an existing device is single in simulation and poor in adaptability are solved, and an accurate and reliable experiment means is provided for stability research of an offshore wind power system.

The invention discloses a marine equipment impact test platform, and relates to the technical field of marine equipment tests. The device comprises a test pool, the bottom of the test pool is fixedly provided with a plurality of water cannon pipes, the top ends of the plurality of water cannon pipes are fixedly provided with turning pipes, the test pool is internally provided with a test floating platform, the test floating platform is internally fixedly provided with a placing platform, and the placing platform is internally provided with equipment to be tested. By arranging the water cannon pipes, a high-pressure water source conveys high-pressure water flow into the test pool through the water cannon pipes, and meanwhile, the water flow is turned through the turning pipes, so that irregular undercurrent is formed in the test pool, large-scale waves appear on the water surface of the test pool, and the test floating platform shakes along with the waves; the wave amplitude can be controlled by controlling the water pressure, so that the stability of the to-be-tested equipment when the ship body is impacted by waves is tested, the scene that the ship body shakes in storm waves is simulated, and the test result is closer to the actual environment.

The invention discloses a mine underground debris flow risk quantitative analysis and evaluation method, and belongs to the technical field of metal mine disaster prevention and control. Comprising the following steps: calculating 24-hour rainfall under different rainstorm occurrence frequencies; determining a sand production critical hydraulic gradient and a sand inrush critical hydraulic gradient, and calculating a sand production water level height and a sand inrush water level height; the rainstorm infiltration amount of the upper boundary of the quaternary gravel bed under the most unfavorable working condition is calculated, and the sand production rainstorm leakage amount and the sand inrush rainstorm leakage amount of the lower boundary of the quaternary gravel bed are calculated; the leakage amount and the imbibition amount are compared, the sand production or sand inrush risk is preliminarily judged, the time needed for lifting the water level to the sand production water level height or the sand inrush water level height is calculated, and finally the sand production or sand inrush risk is judged; and analyzing the sand production and sand inrush risks under the condition of short-time heavy rainfall by adopting the same method. According to the method, underground debris flow occurrence risks under different rainfall intensities are quantitatively analyzed, a disaster triggering mechanism can be determined, critical criteria for formation of mine underground debris flow are given, and a prevention and treatment decision basis is provided.

The invention discloses an aerodynamic load loading method, device and equipment and a medium, relates to the technical field of ocean engineering, is applied to a processor, and comprises the following steps: receiving scale motion data currently acquired by a scaling model of a floating wind turbine generator, and amplifying the scale motion data to obtain full-scale motion data; determining a first expected aerodynamic load borne by the floating wind turbine generator based on the full-size motion data; reducing the first expected aerodynamic load to obtain a second expected aerodynamic load borne by the scaling model; decomposing the second expected aerodynamic load into output thrust of each propeller in the loading device, and converting the output thrust into a PWM control signal; the loading device regulates and controls the rotating speed of each propeller based on the PWM control signal, and loads a target aerodynamic load generated by rotation to the scaling model; and skipping to the step of receiving the scale motion data again until a preset stop condition is met. And the loading of the aerodynamic load on the scale model is accurately realized.

The invention relates to the technical field of simulation experiment equipment, in particular to a sand wave simulation test device under an ice cover flow condition, which comprises an experiment table provided with a water tank, a sand wave sequence component arranged at the bottom of the water tank, and an underground reservoir connected with the experiment table; the water circulation assembly is used for driving water flow to circulate in the water tank and the underground reservoir; the ice cover simulation assembly is used for simulating different ice conditions; the rapid replacement assembly comprises a water flow energy storage mechanism and a position adjusting mechanism, the water flow energy storage mechanism is used for storing energy when water flows out of the underground reservoir, and the position adjusting mechanism is used for adjusting the position of the simulated ice cover assembly during use. According to the invention, the position adjusting mechanism and the sand wave sequence design of the rapid replacement assembly support the completion of ice cover form switching in a short time, so that the experiment preparation time is greatly shortened, and the research efficiency is improved.

The invention relates to an aperiodic disturbance control vibration grid turbulence generation device, which comprises a vibration grid device and a flow field observation device, and is characterized in that the vibration grid device comprises a water tank frame, a water tank, a linear slide rail, a linear module, a vibration grid, a motor and a control system PLC module; the flow field observation device comprises an optical platform, an auxiliary LED lamp and a particle image velocity measurement system, wherein the particle image velocity measurement system comprises a high-speed camera, a laser and a computer. According to the invention, isotropic turbulence in a complex mode can be simulated, and the application range of equipment is expanded. According to the invention, the limitation of a vibration grating device based on periodic disturbance control is overcome, and a more flexible experiment platform is provided for turbulence mechanism research and application of the turbulence mechanism in the fields of material transportation, diffusion, sedimentation, flocculation and the like.

The utility model discloses a multifunctional deep sea environment simulation system, and relates to the technical field of deep sea engineering experiment devices. Comprising a wave flow experiment water tank which is a containing cavity capable of bearing water, and the top of the water tank is of an open structure; a deepwater experiment area, a transition experiment area and a shallow water experiment area are sequentially arranged in the water tank according to the wind direction; the fan array is used for providing a wind field with a preset condition required by an experiment above the water body; the flow guide array is used for guiding and controlling air generated by the fan array; the current generation array is used for generating current and completing circulation of the water body in the wave current experiment water tank through a backflow channel; the wave making array is used for generating waves with different periods and wave heights for the water body; and the wave absorbing plate is used for dissipating energy of the generated waves. According to the system, multi-factor combined action experiment simulation can be synchronously carried out, and the design precision is remarkably improved; the wind wave coupling effect on the structure is achieved, and the real sea wind wave environment is simulated.