74 results about "Breaking wave" patented technology

A circular ring wave pool having an island in the center, the pool water depth becomes deeper the farther away from the island to the outside pool wall. A plurality of wave generators encompass the entire outer wall deep side of the pool. All wave generators point directly to the center of the island. Wave generators are synchronized in their action to produce waves that travel around the circular ring shaped pool in an endless loop therefore creating a traveling surfing wave that never ends. Many waves can be generated simultaneously creating a plurality of endless waves moving around the island. The sloping beach is at an angle to create a hollow tube breaking wave depending on wave speed and size. Hundreds of surfers can be in the pool at the same time all sitting out past the wave breakpoint waiting for an available wave to pass.

A water sculpture is provided having a an upwardly inclined flow surface. A flowing body of water is caused to flow upon the flow surface simulating various desired wave shapes. A variety of aesthetic wave shapes can be created, such as an unbroken wave face, a white water bore, a spilling breaking wave, or a tunnel wave. In one embodiment a walk-through water sculpture is provided such as for an entranceway of a building or the like.

The invention discloses an irregular-size space-variant grid tomography imaging statics correction method in geophysical exploration. The method is characterized by: arranging different grid lengths along a horizontal direction during performing mesh generation; arranging novel nodes on four sides of the grid; performing equal layout on a same distance in a horizontal direction or a vertical direction; or carrying out the equal layout of the nodes on the each grid side in the horizontal direction or the vertical direction; initializing a model speed and performing ray path forward modeling; calculating a difference value between actual picked first break time and ray travelling time and the speed of an inversion model; completing imaging statics correction till inversion speed field is stable. By using the method of the invention, a near surface characteristic of an actual stratum can be better described; propagation rules of a first break wave on the near surface can be better reflected; forward and inversion precision of the speed model can be raised and a statics correction effect can be raised too.

The invention discloses a floated wave-absorbing wall unit and a wave-absorbing wall group suitable for an offshore floating body. The floated wave-absorbing wall unit comprises a wave-absorbing device and a mooring system, wherein the bottom of the mooring system is fixed on a sea bed; the wave-absorbing device is connected with the mooring system. The wave-absorbing wall group comprises a plurality of wave-absorbing wall units which are connected by mooring cables in series or in parallel. The floated wave-absorbing wall unit disclosed by the invention is arranged on the surface layer of a water body, and can reduce the wave energy to the largest extent; with arrangement of a perforated wave-absorbing panel, a wave-absorbing bulb, a wave-resistant sinker chain group and the other structures, the floated wave-absorbing wall unit can further break waves and disturb flow field, so as to effectively reduce the kinetic energy and the potential energy of the waves. The floated wave-absorbing wall unit is high in strength, firm in structure, and good in wave-absorbing effect, and can be arranged on the peripheral side of the offshore floating body to greatly reduce the influence of the waves on the offshore floating body.

The invention belongs to the field of sea wave simulation technology and relates to simulation of breaking waves of different frequencies and different wave heights on the sea and specifically relatesto a flap-type breaking wave simulating device. The device is composed of a drive motor, a transmission assembly, a lift screw rod, a flap board and a support tray, wherein the support tray is arranged fixedly above a wave generation water tank; the flap board is flexibly connected to the lower part of the support tray and is disposed in the wave generation water tank; the flap board is perpendicular to the support tray; the drive motor is fixed on the support tray; the drive motor is connected with the flap board through the transmission assembly so as to drive the flap board to move in a reciprocating manner in the wave generation water tank to generate the breaking waves in a simulating manner. The device provided by the invention is integral in design, good in stability, low in totaldevice cost, convenient to mount and dismount and convenient to operate. Through a method of controlling both the flapping frequency of the flap board and the depth of the flap board immersing into the water tank, waves of different frequencies and different wave heights are generated. The device is wide in application range and can meet requirements for small-size wave generation water tanks in laboratories.

The present invention relates to a film-hanging wave-breaking body with the functions of settling sand, breaking wave and purification, belonging to the field of hydraulic engineering, aquatic environment improvement engineering and hydroecological repairing engineering technology. Said film-hanging prism body is formed from upper and lower two portions, its lower portion is a rigid wave-breaking body and its upper portion is a hanging film which is upwards drawn by float and whose lower end is fastened to said rigid wave-breaking body.

An inverted-code generator 41 inverts the PN code sequence into an inverted code sequence. The inverted code sequence is transmitted. The inverted code sequence, which is transmitted as a communication breaking wave, is formed into a code sequence in the form if inversion of a pilot signal conforming to CDMA system. Moreover, the phase of the inverted code sequence has been advanced. Therefore, the pilot signal, which is being propagated, can appropriately be compensated with the advanced inverted code sequence. Thus, a fact can be recognized by a portable telephone that the portable telephone is deviated from a communication area for the base station.

The invention discloses an S-wave band Doppler radar breaking wave interference suppression method and device and belongs to the radar signal processing field. According to the S-wave band Doppler radar breaking wave interference suppression method and device of the invention, based on original S-wave band Doppler radar signal processing, an empirical mode decomposition method is adopted to decompose breaking wave interfered radar echo signals into a plurality of intrinsic mode functions; and based on a characteristic that the frequency of breaking wave signals is high relative to general sea echo signals, components with high frequency are removed from all the intrinsic mode functions, and the other intrinsic mode functions are reconstructed, so that breaking wave suppressed signals can be obtained. When the method and device of the invention are used for actual data processing, the application effects of the method and device are excellent, and useful signals are not damaged when breaking wave interference is suppressed, and processing effects are obvious, and radar detection precision can be improved.

A wave pool (100) for generating surfable waves wherein the pool defines a channel (106) 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 (206) defined by the second side wall, the pool (100) further including at least one foil (302) 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, wherein the pool (100) 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.

A sand beach erosion amount predicting method comprises the following steps that firstly, the breaking wave height Hb is calculated, Hb=0.39g<0.2>(TH0<2>)<0.4>, g is the gravitational acceleration, H0 is the deepwater wave height, T is the wave period, T0 is the wave duration time, and h is the sand beach water increasing depth; secondly, the wave speed u0, shown in the specification, at the sand beach position is calculated; thirdly, the wave number Ni corresponding to different wave heights is calculated; fourthly, the erosion shear stress caused to the beach face from the waves is calculated, Tauw=0.5FwRhowu0<2>, in the formula, Fw is the friction coefficient between water flow and a soil body, and rhow is the seawater density; fifthly, the sandy soil anti-erosion critical shear stress is calculated, tauc=2/3 ds (rhos-rhow) g tanphi, ds is the sandy soil median size, rhos is the sand grain density, and phi is the internal friction angle of sandy soil; and sixthly, the sand beach erosion amount shown in the specification is calculated, in the formula, Es is the wave erosion amount, Ni is the wave number corresponding to the ith wave height, Ks and a are conversion coefficients for converting the erosion force into the erosion amount, and a is 1.0. The method has the beneficial effects that steps are simple, and the result is reliable, and providing the theoretical guidance for sand beach disaster reduction and protection is the purpose.

The invention discloses a slope breaking wave impact pressure calculation method. At present, slope breaking wave impact pressure calculation is an important link of slope-type seawall engineering design, and plunging breaking wave is a most serious and most dangerous breaking wave type; on the basis of simplified assumed conditions, a half-experience half-theory plunging breaking wave impact pressure calculation formula is put forward, existing regular wave flume experiment data and on-site observation data are utilized, the formula and some empirical formulas adopted currently at home and abroad are compared and analyzed, and the result shows that a former Soviet Union formula adopted currently in China in a standard manner is small in calculation result in a calculation condition with large wave height. The method is similar to calculation results of the Stanczak improved formula and has good wrapping performance on used verifying experiment data.

The invention belongs to the technical field of sea wave simulation, and particularly relates to an insertion type breaking wave simulation device. The insertion type breaking wave simulation device comprises a driving motor, a transmission assembly, a water bucket, an adjusting screw rod and a supporting bracket, wherein the supporting bracket is fixedly arranged above a wave-making water tank, the water bucket is arranged in the wave-making water tank in a parallel direction relative to the supporting bracket and movably connected below the supporting bracket through the adjusting screw rod,the driving motor is fixed on the supporting bracket and connected with the water bucket through the transmission assembly, so that the water bucket is driven to go up and down in the wave-making water tank to further simulate insertion type braking wave generated by the vertical action of the wave in a descending process. The insertion type breaking wave simulation device employs an integral structure. The structure is simple, the stability is good, the cost is low, the installation and operation are convenient, and the available range is wide. The volume of the extracted water amount is increased by the dustpan-type water bucket, and the height range of the produced wave is also increased. The requirements of simulating breaking waves with different intensities and different wave heights in natural marine conditions in a laboratory can be met.

The invention discloses a wave self adaptable emergency rescue boat. The wave self adaptable emergency rescue boat comprises a main hull as well as a front arch and a rear arch which are used for supporting the main hull, wherein float bowels are arranged at the two sides of the bottom of the rescue boat, the float bowels are fixedly connected with the rigid sliding plate, a suspension system is arranged at the front side of the rigid sliding plate, the front arch is connected with the suspension system by virtue of a ball bearing, a rear connecting part is arranged at the rear side of the rigid sliding plate, the rear connecting part is hinged with the rear arch, a propulsion nacelle is connected with the rear end of the rigid sliding plate by virtue of a pin shaft, the main hull is connected with the front arch by virtue of the ball bearing, and the main hull is fixedly connected with the rear arch. The rescue boat disclosed by the invention not only has the characteristics of the traditional rescue boat that operation is flexible, maneuverability is high and water quality requirement is low, but also has wave movement adaptability and does not push, oppress and break waves onlylike the traditional vessels, the wave self adaptable emergency rescue boat can comply with fluctuating and changeable water surface, and a worker on the rescue boat can not feel up-and-down pitch inlarger stormy waves.

An ocean wave-crest powered electrical generator comprises a buoyant vessel anchored to the sea floor by mooring chains. The vessel defines a substantial opening at the bow leading to a paddle wheel such that ocean wave crests flow past the paddle wheel while passing through the generator thereby capturing the power of the continuous wave crests passing through the bow opening. The paddle wheel transforms energy from the breaking wave crests into kinetic energy that in turn activates an electric power generator. The wave crest electrical generator is permanently moored near the beach and allowed to rise and fall with the tide thus allowing for a continuous flow of ocean waves to be converted into power. Pumped storage provides a sustained flow of energy that is easy to regulate and this can be accomplished in combination with “energetic marinas” by constructing a reservoir on top of a near-by cliff, hill or tall building.

The invention belongs to the technical field of ecological restoration and provides a wave dissipating technology for improving basic environment for restoration of aquatic plants in a large shallow lake. Specific to that wind wave perturbance of the large shallow lake is large, an engineering wave dissipating member comprises concrete piles and bamboo rafts, the concrete piles are distributed around a defense area to defend stormy waves, and matched with the bamboo rafts inside the defense area to improve defense effect. The concrete piles are distributed in a staggered manner to form wave dissipating zones to baffle, reflect and break waves and friction of water and the piles so as to reduce waves in the target area; the wave dissipating bamboo rafts are fixed on anchor piles, and waves are broken and eliminated by relative motion of floating floor members of the bamboo rafts and the water body. By the wave dissipating technology, wave affection of the lake can be reduced, resuspension of sediments is controlled, the basic environment is provided for restoration of the aquatic plants in the lake, and a purpose for improving water quality is achieved.

The invention relates to a semi-submersible type perforated plate plant wave-breaking device which is used for breaking waves and purifying water of inland waters. The device comprises at least one wave breaking component. Each wave breaking component comprises a perforated plate, float bowls, positioning units and aquatic plants arranged on the perforated plate. The float bowls are fixedly arranged on the outer sides of the perforated plates and fixed to the water bottom through the positioning units. When waves of the inland waters are transmitted to the semi-submersible type perforated plate plant wave-breaking device, the waves slow down and are broken under the disturbance function of the perforated plates and the aquatic plants, a great amount of energy carried by the waves is consumed, the waves on the upper surfaces and the lower surfaces of the perforated plates are different in speed, waves passing the upper sides and the lower sides of the perforated plates impact on one another, wave energy is further consumed, and thus the wave breaking purpose is achieved. Compared with the prior art, the semi-submersible type perforated plate plant wave-breaking device has the beneficial effects of being simple in structure, low in cost, convenient to mount, good in applicability, modular in mounting, flexible in function switching and the like.

The invention discloses a method for leveling broken wave defects of ultra-thin plates and strips, and belongs to the field of finishing technologies for rolled steel sheets. The method is used for overcoming the broken wave defects of the ultra-thin plates and strips. The technical scheme includes the defined convexity of a work roll of a leveler is -0.03mm; in a primary broken wave leveling and eliminating procedure, tension of a reeling machine ranges from 10000KG to 12000KG, tension of an uncoiling machine ranges from 1800KG to 2000KG, positive roll bending force ranges from 150KN to 200KN, and high rolling force ranges from 4000KN to 4500KN; in a second broken wave leveling and eliminating procedure for oblique waves formed when broken waves are leveled, the tension of the coiling machine, the tension of the uncoiling machine and the roll bending force are unchanged, and small rolling force ranges from 2000KN to 2500KN. The method has the advantages that proper leveling technological parameters are adopted, and the reasonable roll convexity of the work roll of the leveler is selected, so that the broken wave defects of the ultra-thin plates and strips can be eliminated in the leveling procedure, the ultra-thin plates and strips are excellent in shape, the yield can be increased, the production cost can be reduced, and difficult problems which distress enterprises for a long time can be effectively solved.

The invention provides an anti-bubble invisible bulb bow integrated scientific investigation ship, belonging to the technical field of ship design and manufacture. The anti-bubble invisible bulb bow integrated scientific investigation ship comprises an invisible bulb bow which is arranged at the bottom of a ship bow and is integrated with the ship bow, wherein acoustic equipment is embedded in the invisible bulb bow, an oblique bubble guide groove is formed in the side face of the invisible bulb bow, and the invisible bulb bow is connected with a hull in a mode of smooth transition. By arranging the invisible bulb bow with a drop-shaped cross section and reducing the half entrance angle of the invisible bulb bow, the generation probability of breaking waves is reduced; the acoustic equipment is embedded in the invisible bulb bow, thereby being convenient for the acoustic equipment to work and being capable of reducing the sailing resistance; and the oblique bubble guide groove is formed in the side face of the invisible bulb bow, and the height between the bubble guide groove and the bottom of the ship is maximal at the ship bow, thereby effectively preventing generation of bubbles, improving the trend that the bubbles are discharged along the hull, and effectively avoiding the influence on the measurement of the acoustic equipment by the bubbles.

The invention provides an erosion coast plane compound type beach restoration method. The method comprises the following steps that a coastline is divided into a plurality of sub-units; effective wave-breaking wave height Hb and wave-breaking angles theta b in the sub-units are acquired; coastwise net sediment discharge rate of each sub-unit and the sand-gravel particle size of each sub-unit are calculated; and each sub-unit is filled with sand gravels according to the coastwise net sediment discharge rate and the sand-gravel particle size, and the sand gravels from a lower reach are carried to an upper reach periodically. According to the erosion coast plane compound type beach restoration method, the different coastwise net sediment discharge rates of a strong erosion coast section and aweak erosion coast section are fully considered, the whole coast is divided into the plurality of sub-units and is subjected to compound type design, the traditional beach maintenance range is broadened, and the method is equally applicable to areas with relatively severe coastal erosion, so that the improvement of the strong erosion coast protective capability and the improvement of the landscape effect are greatly promoted, and the purpose that the coastwise maintenance particle size is different, but the coastwise net sediment discharge rate is remarkably reduced is achieved.

The invention discloses an airborne laser sounding broken wind wave sea surface model construction method, and belongs to the technical field of marine surveying and mapping. The method comprises the following steps: constructing an initial sea wave spectrum sea surface model based on a sea wave spectrum principle; then extracting a broken wave crest surface of the fitted sea surface by using a mass point-spring model distribution simulation method; and finally, fitting the extracted broken wave crest surface into a broken wave crest sea surface model by utilizing a broken wave sea surface fluctuation theoretical model, and fusing the sea wave spectrum sea surface model and the broken wave crest sea surface model into a complete and real instantaneous three-dimensional broken wind wave sea surface model. Through the method, the construction of the instantaneous three-dimensional broken wind wave sea surface model is realized, and the method has an important data support effect on sea surface refraction correction, sea surface abnormal point detection and depth measurement precision improvement in airborne laser depth measurement.

The Traveling Camera Apparatus for Surfing is embodied to film and photograph a surfer in motion on a breaking wave. The Traveling Camera Apparatus for Surfing is intended to have a full range of motion with functionality in 6 degrees of freedom and with the ability to operate in and out of the water. The advent for such an apparatus is motivated by the advance of the surfing photography/videography industry. The economic feasibility of the invention is spawned by the advent of wavepools equipped with breaking wave making devices that impart to creating breaking waves for surfing in a controlled environment. In such a wavepool a surfer may travel an entire length of the wavepool as permitted by the propagation of the breaking wave. The Traveling Camera Apparatus for Surfing shall be designed to follow along side the subject and create a multitude of images not possible if the camera were stationary in the wavepool. Some popular and sought after vantage points in the surfing photography industry are obtained when the camera is located directly behind the surfer submerged in the breaking wave and directly adjacent to the surfer where the camera is actually submerged in the water body of the breaking wave. In order to film the motion the surfer over the entire duration of the breaking wave, these camera angles require that the camera actually travel a path across the pool similar to that of the surfer on the breaking wave.

The invention provides a damper and a load-bearing envelop enclosure with the same. The damper includes a shell forming an accommodating cavity and a vibration energy dissipating unit located in the shell, wherein the accommodating cavity includes a liquid storing cavity located on the lower portion and a mass body motion cavity located on the upper portion; the vibration energy dissipating unit includes damping fluid accommodated in the liquid storing cavity and a plurality of mass bodies located in the mass body motion cavity, and the mass bodies float on the liquid surface of the damping fluid; and a plurality of tooth-shaped bulges are formed on the outer surface of the mass bodies for breaking waves which are formed in the damping fluid due to vibration to be dispersed in different directions. According to the damper, the vibration of the load-bearing envelop enclosure can be effectively suppressed.

The invention provides a method for predicting the breaking rate of a food strip made by food powder, which comprises the following steps of: measuring a food powder sample by a wide-angle X-ray diffractometer to obtain the wide-angle X-ray diffraction curve of a food powder sample; according to peak height of the characteristic diffraction peak of the wide-angle X-ray diffraction curve, calculating the ratio of the acute peak heights of two adjacent characteristic diffraction peaks; contrasting an ratio with a correlation chart of a breaking rate-the acute peak heightof an characteristic diffraction peaks, and determining the breaking rate of the food powder under a preset processing condition; wherein obtaining the correlation chart of a breakage rate-the acute peak height of the characteristic diffraction peak by an early experiment. Because the relation of the ratio of the acute peak height of the characteristic diffraction peak and the breaking rate is very stable after the food powder is processed into the food strip under the preset processing condition, the method for predicting the breaking rate of the food strip made by the food powder has high accuracy. Compared with the prior art, the method also has the advantages of short measurement process and simplicity in operation and is convenient to widely popularize.

The invention provides a semi-submersible floating type wind turbine foundation structure which comprises an offshore wind power generation assembly and a floating assembly. The floating assembly comprises a center buoy and foundation buoys, the floating assembly further comprises anti-wave flat plates arranged on the center buoy and the foundation buoys, and through holes are formed in the anti-wave flat plates. According to the semi-submersible floating type wind turbine foundation structure, the anti-wave flat plates are arranged on the center buoy and the foundation buoys, the anti-wave flat plates can break waves and absorb energy, scouring of sea waves to the floating assembly is weakened, impact energy in the waves is consumed, impact force of the sea waves to a tower column is weakened, and fatigue damage to the tower column is reduced. Motion response of the offshore wind power generation assembly under the coupling action of wind, waves and flow can be greatly reduced, the stability of the offshore wind power generation assembly is enhanced, fatigue damage caused by sea wave scouring to the center buoy and the foundation buoys of the offshore wind power generation assembly is reduced, and the service life of a whole offshore wind turbine is prolonged.

The embodiment of the invention provides a method and device for acquiring a first-break wave ray. The method comprises the following steps: acquiring seismic data; according to the seismic data, establishing a layered velocity model; acquiring a layer thickness and a layer velocity in the velocity model, and according to the layer thickness and the layer velocity, acquiring the delayed time from trigger points to a target layer and from a receiving point to the target layer; according to the delayed time, the layer velocity, and the distance from each trigger point to the receiving point, acquiring the travelling time of the trigger point to the receiving point through each layer interface; comparing the travelling time, and taking the ray with the minimum travelling time as the first-break wave ray. Through the method and the device, provided by the embodiment of the invention, the first-break wave ray can be accurately acquired.

The invention provides a dam break type simulation breaking wave experiment device. The dam break type simulation breaking wave experiment device comprises an experiment table module, a drive controlmodule, a pulley block module, a circulation experiment working medium module, an experiment water tank module and a PIV module. The experiment body is formed by matching a gate and an organic glass experiment water tank and is a three-dimensional dam break experiment water tank, distilled water is added into the organic glass experiment water tank to control the left liquid level and the right liquid level, and then wave break simulation is achieved through a rapid drawing plate. The experiment body is made of organic glass, the experiment body similar to rigidity is provided, the high transparency of the internal liquid level can be researched, and conditions are provided for shooting of a high-speed camera. Due to a flexible bottom lighting mode, experimental errors generated by refraction of laser penetrating through a gas-liquid interface are effectively reduced; the experimental device is made of angle steel materials, is stable in structural characteristic and simple in structure, and can provide a stable working environment. The device can be used for experimental research of ships and warships and the like impacted by waves; the device is simple in design, easy to processand low in price.

A beach erosion mitigation device is provided that includes an elongated, tubular member configured to be tethered to the shoreline and attenuate wave energy. The tubular member comprises a corrugated construction having enclosed air pockets that afford buoyancy. The ends of the tubular member are open, while along its length are disposed a set of overflow openings and a set of venturi openings. The venturi openings receive incoming water from the breaking wave and direct it axially along the interior of the tubular member. The overflow openings and the open ends allow water to escape prior to the next wave arrival. The device is placed alone, or in groups, along a shorefront to directly receive the energy of breaking waves. The energy thereof is attenuated by the structure of the device and via its redirection therethrough, thereby combating beach erosion caused by storm swells and high energy waves.