33 results about "Kinematic wave" patented technology

The invention discloses an underground velocity model building method, and belongs to the technical field of oil and gas exploration and development. The process of pre-stack seismic event artificial/semi-automatic pick-up is avoided, and the building process of an underground velocity model is speeded up. The underground velocity model building method comprises the following steps: acquiring a common reflection surface stacking operator; acquiring the kinematic wave field attribute parameters of seismic wave according to the common reflection surface stacking operator; and building an underground velocity model based on a built regularization chromatography equation, the kinematic wave field attribute parameters and a built initial underground velocity model.

The invention relates to a mixed containing cavity heat dissipation gas wave refrigerating machine, belonging to the field of gas expansion refrigeration low temperature technology, a pressure gas is jetted to a receiving pipe to generate kinematic waves to dissipate energy, thereby realizing refrigeration, the rotating speed is low and the operation is simple. The mixed containing cavity heat dissipation gas wave refrigerating machine is mainly composed of a machine body, a rotating jet flow distributor, a short receiving pipe, a receiving pipe cylinder, a mixed containing cavity and a heat exchanging unit and is characterized in that the end of the short receiving pipe is opened and is communicated with the mixed containing cavity, the heat exchanging unit is arranged in the mixed containing cavity, and the energy of a compression wave or a shock wave, which is transmitted to the mixed containing cavity from the short receiving pipe, is adsorbed by the heat exchanging unit. The heat dissipation and buffer structure that the mixed containing cavity is spliced by the short receiving pipe is adopted in the invention, therefore, the complete machine volume is small, the pipe can not be broken by vibration, the refrigeration efficiency is high, the changing fluctuation is little, the exhaust of refrigeration gas condensate is very convenient, and the transformed energy is easy to be recycled. The mixed containing cavity heat dissipation gas wave refrigerating machine can be widely used in the field of condensation separation of mixed gas, light dydrocarbon recycle in petroleum gas, low temperature dehydration of natural gas, low-temperature gas source supply and the like.

An USRAMS-based optimization design method of a rainwater pipe network belongs to the crossing field of drainage pipe line design and hydraulic models. Aiming at the imperfection of the rational formula method and the requirements of the new version Outdoor Drainage Specifications, the invention is based on rainwater pipe network design data to establish a USRAMS rainwater pipe network hydraulic model; kinematic wave is adopted for simulating calculation; pipe section overload is used as the verification standard according to the model results; the design scheme is optimized according to the model results so that the reliability of rainwater pipe network design is increased. The number of required parameters is less and the parameters are easy to obtain; the runoff coefficient and the water catchment time can be directly obtained; the process of establishing models is simple and quick; the model results are reliable; the applicability of the method is guaranteed; the method has operability; complicated programming is not required; steps can be finished by means of present software; the operation is simple and easy; the feasibility of the invention is guaranteed.

The invention discloses a sub-basin confluence simulation method based on a slope channel riverway three-level structure, and relates to the technical field of distributed hydrological model confluence simulation. The method comprises the following steps: extracting a river channel and a channel based on DEM data, and dividing drainage basin grids into slope grids, channel grids and river channelgrids according to categories; calculating the length of a confluence path from each grid to a basin outlet, and counting the number of channels and the average length of the channels according to thetypes of the channel grids; setting the confluence attribute of each grid in the drainage basin according to the riverway or channel grid into which each grid finally converges; and according to thegrid confluence attribute, determining equal-height zone slope, channel and river channel runoff distribution coefficients respectively, and adopting a motion wave equation as a basic simulation formula of slope, channel and river channel confluence to perform confluence simulation on the sub-basins and the equal-height zones. According to the method, the influence of the channel confluence process on water circulation can be considered, and the confluence process simulation effect is improved.

The invention discloses a numerical simulation method combining kinematic waves with dynamic waves for a flood process in a mountainous area. According to the method, on the basis of a triangular unstructured mesh finite volume numerical discretization frame, kinematic wave and dynamic wave control equations are both in conservation forms, variables have cell centers, and the discretization format is a Godunov format. Solution methods are distinguished by conducting property assignment on a grid cell solver, when the property is 0, the kinematic wave control equation is solved, and when the property is 1, the dynamic wave control equation is solved. The continuous equations of the kinematic waves and dynamic waves are same, and continuous equations of all grid cells are uniformly solved in a Roe format. When the grid property is 0, a kinematic wave momentum equation is adopted to directly solve conservation variables of the next moment; when the grid property is 1, interfacial momentum numerical flux is calculated in a Roe format, and conservation variables of the next moment are solved by the summation of the momentum flux, bottom slope items and frictional items. According to the method, the practical application capability of a hydrodynamic model during simulation of the flood process in the mountainous area can be effectively improved, and the deficiency of current hydrologic methods is made up.

The invention discloses a method for estimating the surface roughness and soil moisture absorption rate of a slope under rainfall conditions. The movement process of water flow on a slope is described with the help of a kinematic wave equation, the kinematic wave equation is approximately solved by an analytical method to obtain the relation between changes in water flow and depth in different positions of the slope with time, and the surface roughness and soil moisture absorption rate are determined based on the change relation and observed data of rainfall. The method for estimating the surface roughness and soil moisture absorption rate of a slope under rainfall conditions is different from previous measurement methods which cause large error and have limitations. By using the method of the invention, as long as there is data of one rainfall, the volume of runoff at the exit is measured and a water balance equation is established based on a relational expression of changes in water flow and depth in different positions of the slope with time, the surface roughness and soil moisture absorption rate can be determined.

The invention discloses a method for estimating raindrop induced moisture transfer rate and mixed layer depth, which comprises the following steps of: establishing a motion wave equation, and solvinga slope runoff motion process; then establishing a runoff and solute concentration change equation in the mixed layer, calculating the raindrop induced moisture transfer rate and the depth of the mixed layer in combination with the loss data of NO3 <->-N in the actually measured runoff, and finally verifying the calculated raindrop induced moisture transfer rate and the depth of the mixed layer byusing the loss data of NH4 < + >-N in the actually measured runoff. The method solves the problem that it is difficult for an existing model to conveniently and accurately determine the raindrop-induced moisture transfer rate and the depth of the mixed layer.

The invention discloses a sub-basin confluence simulation method considering the influence of a silt dam, and relates to the technical field of distributed hydrological model sub-basin confluence simulation. The method includes: adopting a sub-basin contour zone sleeving mode as a model basic calculation unit; dividing the sub-basins into equal-height zones with different numbers according to theelevation based on DEM; and counting relevant parameters, extracting channel grids, setting channel length thresholds, elimiating dummy channels, carrying out generalization on the silt dam in the equal-height zone and carrying out statistics on related parameters of the silt dam; carrying out slope confluence process simulation on each equal-height zone and caryring out confluence process simulation on sub-basin channels by adopting a kinematic wave equation, carrying out regulation and storage correction on channel confluence amount by adopting a silt dam water balance principle, and simulating a riverway confluence process by adopting the kinematic wave equation. According to the method provided by the invention, the influence of silt dam construction in the calculation unit on the confluence process can be simulated.

The invention discloses an estimation method of a slope roughness factor and a silt erosion rate under the rainfall condition. The method comprises the following steps of firstly building an infiltration model under the rainfall condition to obtain the accumulated infiltration quantity in the rainfall process; then, building a kinematic wave equation; obtaining the rope roughness and the slope water depth by combining with the balance relationship of the accumulated infiltration quantity, the kinematic wave equation and the water quantity; then, building a silt conveying equation; and determining the silt erosion rate according to practically measured rainfall data and the slope water depth. Under the condition of the time of once rainfall, the unit time flow rate and silt quantity in a position of a flow outlet are measured; the slope roughness factor and the silt erosion rate can be obtained by combining with the relationship between the flow rate and the water depth and the relationship among the rain intensity, the water depth and the silt generating quantity; a parameter obtaining method of the infiltration process is simplified; and the general applicability of the estimationresult is improved.

The invention discloses a flow confluence calculation method in a complex underlying surface condition of a city. The method comprises following steps of: step 1, constructing a kinematic wave equation describing an overland flow motion and setting initial conditions and boundary conditions; step 2, constructing an evolution equation on the basis of a discrete velocity model; step 3, processing and calculating multi-scale problems of the Lattice Boltzmann method; step 4, determining an equilibrium state distribution function; step 5, processing the initial conditions and the boundary conditions; and step 6, solving an overland flow motion equation through the improved Lattice Boltzmann method. Compared with the prior art, the flow confluence calculation method can be applied for solving the overland flow motion equation, and by means of the processing method of the multi-scale problems, solving precision of the overland flow motion equation is effectively improved, and problems of increasing complexity of the underlying surface terrains and covering features of a drainage basin in a background of acceleration of urbanization processes are solved.

The present invention provides a wave-driven blower and a wave-driven generator. Embodiments can accelerate fluid flows with waves requiring with no or minimal moving parts. The waves driving the flow can be surface-thermal waves on the walls of the device. The velocity of the surface-thermal wave entrains the fluid near the surface and imparts a velocity to the fluid. Other types of waves can generate fluid flow. These other waves can be produced by variations in chemical composition, ionic concentration, chemical potential, total pressure, partial pressure and surface texture. Operating as a generator, the device extracts energy from a flowing fluid to amplify wave motions. The wave motions in turn generate electrical power or some other form of useable power

The invention discloses a six-degree-of-freedom pool trial trip instrument suitable for submerged body icebreaking research. The trial trip instrument mainly comprises a guide rod movement mechanism,a cam movement mechanism and a waveform monitoring mechanism, wherein the guide rod movement mechanism and the cam movement mechanism are cooperated and matched, so that a submerged body can generatethe six-degree-of-freedom combined movement of surging, swaying, heaving, rolling, pitching and yawing; and the waveform monitoring mechanism is used for recording the ice layer bending deformation response excited when the submerged body moves at different combination degrees of freedom. According to the ice pool trial trip instrument provided by the invention, the motion state of the submerged body in a pool can be flexibly adjusted according to the experimental research requirements, so that the ice breaking efficiency of the submerged body in different motion states is explored, and the data support is provided for the ice breaking and water discharging operation of the submerged body.

The invention discloses a sub-basin confluence simulation method considering the influence of a terrace silt dam, and relates to the technical field of hydrological model simulation. The method comprises the following steps: taking a mode of sleeving equal-height zones in sub-basins as a basic calculation unit of a model, dividing the sub-basins into unequal-number equal-height zones according toelevation based on DEM, counting related parameters, extracting channel grids, setting a channel length threshold, and removing pseudo-channels; generalizing the terraces and the silt dams in the equal-height zone, calculating the interception ratio of the terraces to slope runoff, and counting related parameters of the silt dams; and simulating the confluence process of the slope surface, the single channel and the riverway of each equal-height zone based on a motion wave equation. According to the method, the influence of silt dam construction and terrace construction in the calculation uniton the confluence process can be simulated.

The invention discloses a method for estimating earth's surface roughness coefficient and infiltration parameters of a slope under the condition of water flow erosion. The method comprises the steps of establishing a kinematic wave equation, then solving the kinematic wave equation by means of an analytical method to obtain the changing relation with time of slope flow and water depth, and determining the earth's surface roughness coefficient and infiltration parameters according to actually-measured data under the condition of water flow erosion. Compared with an existing trace method for flow speed measurement, the measurement time is shortened, the estimating accuracy is improved, the earth's surface roughness coefficient and infiltration parameters (a, b) can be simultaneously determined under the condition that inflow and outflow are known, and the operation is simple and easy.

The invention discloses an anti-seismic device for underwater equipment, comprising: a crustal displacement monitoring module, installed and fixed on the measured crustal rock layer, used for real-time monitoring of the displacement of the crustal rock layer movement to obtain a crustal displacement signal, and processing to obtain an electrical signal of the crustal displacement The crustal movement acoustic wave monitoring module is installed and fixed in the measured crustal rock layer for real-time direct monitoring of crustal movement or motion sound waves caused by seabed earthquakes, or installed on underwater engineering equipment for indirect monitoring of seabed crustal movement, earthquakes or tsunamis Generated acoustic wave signals, and convert the motion wave signals into motion wave electrical signals; the signal processing module, whose input end is connected to the crustal displacement monitoring module and the crustal motion acoustic wave monitoring module, is used to detect the crustal displacement electrical signals and/or motion wave electrical signals. The signal is analyzed and processed to obtain the corresponding result information. The invention can directly or indirectly monitor the movement state of the seabed crust and the state of the seabed earthquake in real time.

The invention discloses a dynamic drainage basin sediment yield simulation method based on a DEM, and relates to the technical field of water and soil loss analys.The loess gully area is divided into three vertical distribution units including a ridge and loess slope area, a valley slope area and a trench area according to the terrain by obtaining terrain data and rainfall data of the loess gully area; a distributed runoff movement numerical model based on DEM grids is established by adopting a slope flow movement wave equation, the runoff depth, the flow velocity and the flow of each grid at any moment in the loess gully area drainage basin are calculated, the runoff and sediment yield is deduced according to a mechanical concept, and the simulation work of the dynamic drainage basin sediment yield is completed.

The invention belongs to the technical field of ocean energy utilization, and provides a wave direction self-adaptive multi-water-channel wave focusing type wave energy power generation device. The wave direction self-adaptive multi-water-channel wave focusing type wave energy power generation device comprises an energy collecting system, an energy conversion system and a supporting system. Wavesare focused through double water channels, and the motion wave amplitude of water mass points behind a box body is doubled. A device and a fixed pile column are connected through a universal bearing,an opening of the device always faces the flowing direction of the waves, and the device adapts to different seasons and water area conditions, is low in requirement for the environment and can be putinto use in a wide sea area. A plurality of circles of pre-stretching spring pressing pieces are arranged in a winding barrel, it is guaranteed that no matter a floater is positioned at the wave crest or the wave trough, a nylon rope connected with the floater is always in a straightened state, and the situation that due to loosening, the rope is derailed to a pulley block, and consequently normal work cannot be achieved is avoided. A pawl is fixed to a fixed connection gear connected with a ratchet wheel, so that only rotation in one direction in the two-way rotation of the winding barrel drives the ratchet wheel to operate, accordingly, one-way energy storage of a flywheel rotor in a power generation cabin is determined, and meanwhile the kinetic energy upper limit of a flywheel is limited.

The invention relates to the technical field of traditional Chinese medicine and application thereof, in particular to application of an alhagi sparsifolia extract in preparation of medicine for treating an irritable bowel syndrome. The alhagi sparsifolia extract has the good treatment effect on IBS-D, particularly, the alhagi sparsifolia extract has the effects of increasing the abdominal withdrawal reflex capacity threshold value, reducing jejunal smooth muscle kinematic wave amplitude, reducing fecal water content, increasing serum K + content, reducing packed cell volume and the like and has the good effects in the aspect of inhibiting visceral hypersensitivity or relieving abnormal defecation caused by stress or irritable bowel, multiple measures are simultaneously taken in multiple pathological processes, the good treatment effect is achieved on IBS-C, IBS-D and IBS-A, a pure traditional Chinese medicine formula is adopted, and few side effects are produced.

The invention discloses a large-scale typhoon flood simulation and calculation method. The method comprises the following steps of firstly, generalizing a grid into an upper-layer soil aquifer and a lower-layer soil aquifer by using the spatial data sets, such as landform, soil texture, land utilization, etc., as a basis for model calculation based on a grid distributed hydrological simulation method; considering the rainfall, evaporation, excess infiltration runoff, full storage runoff, soil lateral flow and drainage water flow towards an underground aquifer on each grid, wherein the lateral flow comprises the lateral flow flowing into the grid from the upstream grid, the lateral flow flowing to the downstream grid from the grid and the groundwater runoff; on the basis of runoff production calculation, adopting an improved kinematic wave backflow calculation method to carry out simulation calculation on the backflow of a slope and a river channel. According to the method, in the large-scale typhoon flood simulation calculation, high calculation efficiency and certain accuracy are displayed, and the problem of balance between accuracy and timeliness is solved.