29 results about "Breaking wave" patented technology

The invention provides a prediction method suitable for short-term rapid wave prediction during a construction period, which is suitable for the field of sea wave prediction and comprises the steps of planning a construction area, planning typical point locations, obtaining wave element information, constructing a data set, processing data, extracting features, constructing a time convolutional network prediction model, training, testing and optimizing the model and applying the model. According to the method, a point location latitude and longitude-wave element data set of an engineering sea area is constructed through an SWAN / WAVEWATCH mode, the influence of factors such as water depth topography, complex shorelines, islands, shoreline wave breakage and bottom friction on wave propagation can be considered, and it is guaranteed that data contain enough physical parameter information influencing waves; through the time convolution network, diversified activation function selection, systematic data processing and feature extraction, the analysis capability of the model is enhanced, the accuracy and rapidity of wave element prediction are improved, selection of a construction window period is facilitated, reliable support is provided for construction decision making, and thus the construction risk is reduced.

The invention belongs to the technical field of ocean remote sensing, and particularly discloses a shore wave parameter extraction method and a shore wave height prediction method based on an airborne static laser radar. The problem that when a static laser radar scanner is used for scanning dynamic clapping shore waves, the periodic evolution form of the sea waves cannot be obtained is effectively solved. The parameter extraction method comprises the steps that an unmanned aerial vehicle is used for carrying a static laser radar scanner to collect data, the data are exported to be in a txt format, and geographic coordinates of point cloud, a scanning angle between a laser radar scanning beam and the direction perpendicular to the ground and relative time are obtained; sequencing the required data according to relative time, and slitting the sequenced data into a plurality of new txt files according to a self-defined time interval; extracting a wave beam from the txt file; de-noising and visualizing the data; and sea wave parameter extraction and environmental influence factor acquisition. According to the method, the beamwave beam state data of the self-defined time interval can be accurately captured, and the refined beamwave parameters can be effectively extracted.

The invention discloses an extremely shallow water blue-green laser sounding dynamic refraction vision correction method, which belongs to the technical field of marine surveying and mapping and underwater detection, is used for laser refraction correction, and comprises the following steps: synchronously acquiring binocular images and inertial measurement unit attitude data, and generating a three-dimensional point cloud; according to a light spot area in the laser emission angle index point cloud, fitting a micro-tangent plane to obtain a water surface original normal vector; calculating a confidence coefficient weight according to the image texture definition, and iteratively calculating an optimal estimation normal vector based on the original normal vector and the weight; calculating a real incident angle according to the optimal estimation normal vector and the laser emitting direction; calculating the direction vector of the underwater refracted light according to the Snell's law; and calculating the underwater three-dimensional coordinates of the target point by combining the propagation distance of the laser in the air and the water and the emission origin coordinates. According to the method, the visual confidence is introduced, so that the problem of data failure when the traditional visual sounding encounters water surface reflection, glare or broken waves is solved, and the robustness under the complex sea condition is remarkably improved.

The present invention discloses a space-time inversion method for ocean wave parameters using a shipborne coherent S-band radar, comprising the following steps: obtaining a space-time Doppler spectrum and extracting the average Doppler frequency deviation; estimating a space-time radial velocity sequence and converting it into a wavenumber frequency spectrum; estimating the wavefield energy and group line energy distribution and designing an adaptive filter; filtering the wavenumber frequency spectrum and reconstructing a space-time radial Doppler velocity sequence; estimating the wavenumber directional spectrum; repeating the above process to obtain six wavenumber frequency spectra and inverting an undirected ocean wave spectrum; and finally inverting the ocean wave parameters. This method addresses the impact of breaking waves and ship motion on the accuracy of ocean wave parameter inversion. It not only retains the advantages of shore-based coherent microwave radar but also overcomes its shortcomings in spatial scalability and temporal continuity, significantly improving the robustness and accuracy of ocean wave parameter inversion using shipborne coherent S-band radar.

The application discloses a method for correcting the vision of laser refraction in extremely shallow water, and belongs to the technical field of marine surveying and mapping and underwater detection, and is used for laser refraction correction. The method comprises the following steps: synchronously collecting binocular images and inertial measurement unit attitude data, and generating three-dimensional point clouds; indexing a light spot area in the point clouds according to a laser emission angle, fitting a micro tangent plane, and obtaining an original normal vector of the water surface; calculating a confidence weight according to the image texture definition, and iteratively calculating an optimal estimated normal vector based on the original normal vector and the weight; calculating a real incident angle according to the optimal estimated normal vector and a laser emission direction; calculating a direction vector of underwater refracted light according to Snell's law; and combining the propagation distances of the laser in the air and in the water and the emission origin coordinates, and calculating three-dimensional coordinates of a target point on the water bottom. The application introduces visual confidence, solves the problem of data failure of traditional visual depth measurement when encountering water surface reflection, glare or broken waves, and significantly improves the robustness under complex sea conditions.

The invention discloses an earth surface large-scale hydrodynamic simulation method based on a shallow water equation set, and belongs to the technical field of hydromechanics, and the method comprises the steps: introducing a bed bottom source item, and constructing a shallow water lattice Boltzmann equation; constructing a dry-wet boundary treatment equation in combination with the single relaxation model; constructing a model to be simulated, and setting a computational domain according to the constructed model; setting simulation parameters of the to-be-simulated model; setting boundary conditions of the to-be-simulated model; and simulating the dynamic phenomenon of the to-be-simulated model according to the constructed shallow water lattice Boltzmann equation and dry-wet boundary treatment equation. By the adoption of the method, on the premise that mass-momentum conservation is guaranteed, the calculation stability of dynamic boundary scenes such as the dam break wave front edge and intertidal zone submerging is remarkably improved, and calculation time is shortened.

This invention proposes an echo modeling method for a shipborne coherent microwave ocean radar, comprising: performing three-dimensional sea surface modeling to simulate the three-dimensional sea surface; simulating the instantaneous state and evolution of breaking waves based on the conditions for the generation of breaking waves on the simulated three-dimensional sea surface; simulating a ship motion model based on a three-harmonic statistical model of periodic motion; and simulating ship motion models for different sea conditions by varying the amplitude and angular frequency of each harmonic of the ship motion model to simulate the ship's swaying state under different sea conditions; simulating a composite sea surface echo velocity model modulated by the ship's motion; and using small-amplitude scattering theory to model the scattering mechanism of free waves and breaking waves by a coherent microwave ocean radar at a ship's grazing angle, thereby obtaining a simulation model of the Doppler spectrum of the coherent microwave ocean radar's sea surface echo. This invention establishes the scattering mechanism of the coherent microwave radar on a ship, taking into account the influence of the ship platform and breaking waves on the radar's Doppler spectrum.

This invention discloses a method for identifying multiple wave breaking events in numerical calculations, belonging to the field of fluid dynamics in marine engineering. The method includes: determining saturated breaking wave state indices, modifying the wave energy dissipation expression, and constructing a cyclical discrimination logic combining critical breaking wave height and critical recovery wave height. This invention can accurately capture the multi-peak wave height characteristics during multiple wave breaking events, accurately reproduce the bimodal morphology of coastal current velocity profiles, significantly improve the accuracy of numerical simulations of wave propagation and nearshore circulation on gently sloping coasts, and provide reliable technical support for coastal engineering design, sediment transport prediction, and pollutant diffusion simulation.

This invention relates to an experimental apparatus and method for simulating ship motion under severe sea conditions, belonging to the field of ship wave load testing technology. It addresses the problem that existing severe sea condition wave load testing technologies are insufficient in simulating realistic waves under actual sea conditions, such as high wave heights, distorted waves, and breaking waves. The wave-generating system includes a wave-generating plate located at one end of a water tank and swinging along the length of the tank, and a driving component for driving the wave-generating plate's swing. The nonlinear wave generation system includes a wave-generating rod and several jet pipes. The wave-generating rod is arranged along the width of the water tank and slidably set along the height of the water tank via a height adjustment component. The jet pipes are all located at the bottom of the water tank. This invention enables the simulation of the water-air mixture flow field and accurate measurement of loads in distorted and nonlinear waves under severe sea conditions. It allows for a wide variety of experimental types and diverse functions, and can replace the expensive and costly towing tanks used for general ship models.

The invention belongs to the technical field of new energy power generation, and relates to a bank wave impact kinetic energy capturing system and an energy storage method.The bank wave impact kinetic energy capturing system comprises a bank wave impact kinetic energy capturing device, a hydraulic workstation, a high-pressure gas storage tank set and a power generator; the hydraulic output end of the hydraulic pump communicates with the hydraulic input end of the hydraulic motor through a hydraulic pipeline, an air outlet of the compressor communicates with an air inlet of the high-pressure air storage tank set, an air outlet of the high-pressure air storage tank set communicates with an air inlet of the expansion machine, an output shaft of the expansion machine is in torque connection with the generator, and the generator is electrically connected to a power grid. According to the invention, a compressed air energy storage mode is adopted, and the mechanical energy of the bank waves is converted into compressed air energy for large-scale centralized storage; according to the electricity demand, the stored high-pressure air energy can be converted into the electric energy for grid-connected power generation at any time, the effectiveness of converting the shock kinetic energy of the bank waves into the electric energy is improved, and the problems that the voltage fluctuation is large and the current is interrupted when the shock kinetic energy of the bank waves is directly converted into the electric energy are solved.

The utility model provides an embankment structure which comprises a lower wave wall and an upper wave wall which are arranged along a water bank, the lower wave wall is arranged close to the water surface, the upper wave wall is located at the inclined upper position of the downstream side of the lower wave wall, a lower layer platform is arranged between the top face of the lower wave wall and the upper wave wall, and an upper layer platform is arranged on the downstream side of the upper wave wall. The lower wave wall is of a vertical wall body structure and comprises a slope protection outer wall, a consolidation wall and a retaining wall which are arranged in sequence, and the slope protection outer wall is arranged in a water facing mode and is of a concave-convex wave-shaped wall body structure. In the utility model, the embankment is provided with the upper layer platform and the lower layer platform, the upper layer platform is correspondingly provided with the upper wave wall, the lower layer platform is correspondingly provided with the lower wave wall, the lower wave wall comprises three layers, namely the slope protection outer wall, the consolidation wall and the retaining wall, and the slope protection outer wall is of a concave-convex wave-shaped wall body structure, so that the influence caused by wave breaking impact is reduced; the firmness and the stability of the embankment are improved.

The application relates to an integrated device for ice breaking and wave energy collecting, wherein the wave energy generating main body is surrounded by a plurality of generating units along the circumference of a stand column; the generating unit comprises a generating cabin, a connecting rod structure and a float; the generating cabin is provided with a generator; the connecting rod structure is connected with the generator at one end and connected with the float at the other end, and comprises a first connecting rod, a second connecting rod and a third connecting rod; the lower end of the first connecting rod is hingedly connected with the generating cabin and is drivingly connected with the input rotating shaft of the generator; the upper end of the first connecting rod is hingedly connected with one end of the second connecting rod; the other end of the second connecting rod is hingedly connected with one end of the third connecting rod and simultaneously hingedly connected with the float; the other end of the third connecting rod is provided with a sliding member; the sliding member is internally provided with a driving member; the driving member is used for driving the other end of the third connecting rod to move along the first connecting rod, so as to switch the generating unit between the generating state and the ice breaking state. The application realizes the unfolding or folding of the float through the connecting rod structure, and can not only collect waves, but also convert into an ice breaking and ice preventing device when the sea surface is iced.

An ecological bedrock revetment structure of the present invention includes a shore base, and is characterized in that: a steel mesh is laid on the shore base, a geotextile is laid on the steel mesh, and a gravel layer is laid on the geotextile; a concrete block is laid on the gravel layer, a wave-cutting groove is arranged on the upper surface of the concrete block, a plurality of through holes penetrating the concrete block itself are arranged in the concrete block, gravel is filled in the gap between the concrete blocks, and a slope surface made of stones is also arranged on the geotextile to be connected with the concrete block. The concrete block of the present invention can reduce the wave run-up and overtopping, improve the wave resistance of the sea-facing revetment surface, increase the porosity and specific surface area, and in addition to having ecological functions, the natural form can provide a multi-porous attachment structure for organisms, and also has the protection function of artificial blocks: the surface is rough and has voids, which can break waves and dissipate energy, reduce the erosion degree of the coast by sea waves or keep the water area in the port basin stable.

The invention discloses an in-situ observation system and method for breaking wave involved bubble plume under a high sea condition, the in-situ observation system comprises an unmanned aerial vehicle, a plurality of self-adaptive dual-mode bubble sensors and a bubble processing system, the plurality of self-adaptive dual-mode bubble sensors are arranged on an investigation ship, a shipborne platform is used for coordinating the unmanned aerial vehicle to recycle sensor data, and a bubble processing system arranged in a shipborne or shore-based computing platform is used for completing bubble plume parameter identification under the high sea condition. According to the in-situ observation method, data collected by the sensors is compressed by adopting an FPGA and DSP heterogeneous computing cooperation method, and isomorphic bubble observation data based on the same-type sensors can be output. The in-situ observation system can effectively avoid the tedious process that a plurality of different types of observation instruments need to be arranged for bubble plume observation under the traditional high sea condition, and can improve the coverage area of a single collection area under the sea condition, thereby improving the number of single collection samples.

The application discloses a kind of based on video image deep learning's nearshore wave breaking type classification method. Among them, the method includes: based on fixed or temporary video acquisition equipment, the video image data of nearshore area is collected, the video image data view angle covers the high position of nearshore breaking wave zone;The video image data is preprocessed, and according to data respectively mark overflow, roll wave and collapse wave;Based on the data after labeling, training set is constructed, and a neural network model is trained based on the training set;Based on the neural network model after training, the feature extraction and time series modeling of nearshore wave image sequence are carried out, and the wave breaking type corresponding to the nearshore wave image sequence is predicted.The application is trained and reasoning by collecting time series video data, constructing deep learning model, to automatically complete breaking wave type identification.The method is efficient and reliable, can adapt to various sea conditions, and has high practical value in actual application.

The invention discloses a coastal polder area engineering construction design water level determination method, which comprises the following steps of: standardly calculating a coastal polder area design rainstorm process and a flow process of catchment of each surrounding hillside, and superposing the design rainstorm and the catchment of the hillside; in combination with the underwater topography of the engineering sea area, the breaking wave height and the significant wave height of each time period corresponding to the same tide level process are compared, and a significant wave height process line is obtained through standard calculation; based on the significant wave height process line, calculating a wave overtopping amount change process according to a seawall engineering design specification, and superposing the wave overtopping amount, a designed rainstorm process and a hillside catchment process to obtain a total runoff production process; sketching a water storage capacity and water level relation graph and a relation table; and iteratively calculating the maximum inland inundation water level of the coastal polder area corresponding to the drainage capacities of different pump stations based on the total runoff production process and the water level relational graph. The method can accurately calculate the designed inland inundation water levels of different pump station drainage capacities in different flood recurrence periods, is low in calculation cost, and meets the economic and safety requirements of engineering construction.

The utility model discloses a multifunctional water tank for simulating dam break waves, and relates to the technical field of dam break wave simulation experiment devices. The sliding frame is mounted on the water tank main body and slides along the water tank main body; the gate limiting assembly is mounted on the sliding frame and is in sealing contact with the inner wall of the water tank main body; the gate is mounted on the gate limiting assembly in a sliding manner; the wave maker is fixed on the inner wall of the left end of the water tank main body; the inclined plate is hinged to the right end of the interior of the water tank main body; racks are fixedly mounted on two sides of the water tank main body; the sliding frame comprises a frame body, simulation of various wave forms can be achieved by adjusting the inclination angle of the inclined plate and the position of the gate, the gate is controlled by the gate limiting assembly, the horizontal moving and lifting functions can be achieved, and water distribution is more flexible and convenient.

The invention discloses a water wave surface measurement software and hardware system based on multi-line structured light and a monocular camera, and belongs to the technical field of ship wave surface measurement. The method comprises the following steps: building and calibrating a system, arranging a multi-line laser and a monocular camera to form a hardware system, using a checkerboard marker to fix camera parameters and fitting a laser plane equation; water wave image acquisition: acquiring laser stripe images reflected by water waves; preprocessing the image, and enhancing and denoising the image; stripe center extraction and sorting: extracting stripe center coordinates with sub-pixel precision and carrying out clustering sorting to correspond to a laser plane; and three-dimensional wave surface reconstruction: converting the coordinates into three-dimensional points and carrying out interpolation to obtain wave surface morphology data. According to the method, the multi-line structured light is combined with the monocular vision, so that the interference of the broken wave surface is overcome, the problem of feature matching is avoided, and the high-precision and high-robustness measurement of the high-dynamic water wave transient full-field three-dimensional morphology is realized.

The application discloses a kind of ground surface large-scale hydrodynamics simulation simulation methods based on shallow water equation group, belong to the technical field of fluid mechanics, steps include: introducing bed bottom source term, shallow water lattice Boltzmann equation is constructed;Combining single relaxation model constructs dry-wet boundary processing equation;The model to be simulated is constructed, and the calculation domain is set according to the constructed model;Simulation parameters of the model to be simulated are set;The boundary condition of the model to be simulated is set;According to the shallow water lattice Boltzmann equation and dry-wet boundary processing equation constructed, the dynamic phenomenon of the model to be simulated is simulated.The application uses the above method, on the premise of guaranteeing mass-momentum conservation, significantly improves the calculation stability of dam-break wave front, intertidal zone submergence and other dynamic boundary scenarios, and shortens the time consumption of calculation.

1. Name of the design product: Table (Breaking Wave). 2. Use of the design product: For furniture. 3. Design key points of the design product: Lies in the shape. 4. Picture or photograph that best shows the design key points: Perspective view.

The utility model relates to the technical field of abalone culture, and discloses a floating box for abalone culture, which comprises a floating plate, the whole floating plate is circular, both sides of the floating plate are fixedly provided with wave breaking plates for breaking waves, both sides of the floating plate are fixedly provided with inclined connecting rods, and the inclined connecting rods are fixedly connected with the floating plate. The floating device comprises a floating plate and a connecting rod, floating pieces used for floating bearing are fixedly installed at the two ends of the bottom of the connecting rod, the floating device further comprises a row-connecting assembly, the row-connecting assembly is arranged at the top of the floating plate, the row-connecting assembly is used for connecting and fixing the floating boxes on the two sides, and the row-connecting assembly comprises a sleeve rod, an inserting groove and a fixing inserting piece; through mutual cooperation of the structures, the device is stable in structure, convenient to connect and high in wind and wave resistance, can effectively cope with the severe marine environment, improves the abalone culture efficiency and safety, reduces the generation of sea floating garbage, protects the marine ecological environment, and is more practical.

The invention discloses an offshore wind power foundation wave disturbance device, and belongs to the technical field of fan foundation auxiliary structures. The device comprises a fan foundation; an annular floating body is arranged on the periphery of the fan foundation, the floating body is connected with the fan foundation through a flexible connecting piece, and the floating body and the fan foundation are coaxial. The outer ring position of the floating body is further connected with a wave disturbance device through a floating body reinforcing ring, the wave disturbance device is connected with a wave detection device through a second rigid connecting piece, the wave detection device is located at the outer ring position of the wave disturbance device, and a wave disturbance device motor is arranged in the floating body; and multiple sections of wave disturbers are uniformly distributed along the circumference. According to the method, the wave length and wave height of wave propagation destroyed by vibration and the propagation period and frequency of small waves can be flexibly applied, a complete wave is changed into a broken wave through vibration, the steel consumption of the wind turbine foundation structure is saved to the maximum extent, resources are saved, the utilization rate is increased, and good economical efficiency and practicability are achieved.

To provide a wave power generation unit having a configuration suitable for executing wave power generation in waters such as ocean areas where impact of breaking waves is less, that is, offshore, and a wave power generation system.SOLUTION: A wave receiving bucket 32P1 submerged at a first position P1 has a wave receiving surface 32b facing downward when a floater 2 is floating on a water surface 100, and an upward relative water flow 103a acts toward the wave receiving surface 32b, to push the wave receiving bucket 32P1 at the first position P1 relatively upward, causing a rotation body part 31 and a rotation shaft 33 to rotate in a forward direction (a solid arrow direction in Fig.5). Consequently, the wave receiving bucket 32P1 submerged at the first position P1 is suitable for converting the relative water flow 103a, which acts as an upward external force, into rotational motion of the rotation shaft 33 of the wave receiving rotor 3.SELECTED DRAWING: Figure 5

The invention discloses a wave surface three-dimensional shape measurement method, device, equipment, medium and product for representing broken water waves, and relates to the field of ship wave surface measurement, and the method comprises the steps: calibrating internal and external parameters of a camera according to a target image, and constructing a laser plane equation; the target image is an image which is shot by two cameras at the same time and has laser rays; performing a broken wave shooting experiment based on internal and external parameters of the camera to obtain a broken wave surface reflection image; extracting wave surface feature points of the broken wave surface reflection image, matching the wave surface feature points, and determining the matched wave surface feature points; converting the matched wave surface feature points into a three-dimensional coordinate system according to internal and external parameters of the camera, removing error wave surface feature points outside a laser line plane according to a laser plane equation, and determining the wave surface feature points after the error points are removed; and performing curved surface fitting on the wave surface feature points after the error points are removed, and generating a wave surface three-dimensional shape used for representing the broken water waves, so that the precision of wave surface reconstruction can be remarkably improved.

The application discloses a sea-air interface micro-plastic aerosolization detection system and a detection method. The first box body is a closed box body. An air inlet and an air outlet are arranged on the top cover of the first box body. An overflow pipe is horizontally arranged on the top of the first box body. A horizontal slit is arranged on the overflow pipe. The inlet of the overflow pipe is connected with seawater through a pump. The air inlet is connected with a clean air source. The air outlet is connected with a low-pressure cascade impactor. A first box body overflow port is arranged at a set height of the first box body. The first box body overflow port is sequentially connected with a multi-stage pre-filter and a polycarbonate membrane-glass sand core filter. Aerosol particles generated by breaking waves are collected into an atmospheric particulate matter grading sampler. Micro-plastic particles in seawater and air are identified and counted through different light excitation channels of a fluorescence microscope. Finally, the aerosolization degree of micro-plastics at the sea-air interface is quantified through a micro-plastic aerosolization formula.

The application discloses a kind of video inside biological physics priori guide's nearshore breaking wave propagation trajectory detection method, wherein the method includes: obtaining shore-based video image, setting across-shore sampling section in video field of view, extracting pixel brightness value along the across-shore sampling section frame by frame and stacking in time sequence, generate space-time stack image;The space-time stack image is analyzed by time sequence statistical characteristics, generate inside biological physics priori;The inside biological physics priori includes breaking wave activity enhancement representation and two-dimensional space priori;Wherein, the breaking wave activity enhancement representation is obtained by standardization image and across-shore breaking wave activity intensity weighting, the two-dimensional space priori is copied along time direction by one-dimensional space priori in across-shore direction, and the one-dimensional space priori is determined based on the across-shore distribution characteristics of breaking wave activity intensity, etc.;The present application can be applied to long-term continuous monitoring of natural beach wave breaking process, breaking wave activity area identification, wave propagation characteristic extraction and the like.

The utility model discloses a kind of simulation water floating rocking ship body devices, belong to the field of recreational facilities. Device includes: ship body, lifting mechanism, compression spring assembly and buoyancy counterweight box assembly;Wherein, ship body is elastically connected on lifting mechanism by compression spring assembly, can be lifted under the drive of lifting mechanism and move back and forth under the action of compression spring assembly;Ship body bottom installs buoyancy counterweight box assembly, realizes the purpose of buoyancy weight reduction to ship body. The ship body device of the utility model combines and uses lifting mechanism and compression spring assembly, realizes the running effect that ship body is up and down in water and moves back and forth, its structure is simple and practical, can be used for similar small boat in water performance occasion of breaking waves with wind.

A wave pool for generating surfable waves is disclosed. The wave pool includes a pool for containing water. The pool defines a channel having a first side wall, a second side wall, and a bottom with a contour that slopes upward from a deep area proximate the first side wall toward a sill defined by the second side wall. The wave pool further includes at least one foil at least partially submerged in the water near the side wall, and being adapted for movement by a moving mechanism in a direction along the side wall for generating a wave in the channel that forms a breaking wave on the sill. The wave pool further includes one or more passive flow control mechanisms to mitigate a mean flow of the water induced by the movement of the at least one foil in the direction along the side wall.