49 results about "Flume" patented technology

The invention relates to a local washout test method for a single-column composite barrel type foundation under an actual wave current condition. The method comprises the following steps: acquiring basic data of a target wind power plant area; determining a scale, and constructing a reduced scale physical model water tank according to similar conditions; parameters of the first two-way pump, the second two-way pump and the wave maker are determined through adjustment and measurement; excavating a test scour area, installing a reduced-scale single-column composite cylindrical foundation, and laying model sand; and carrying out a scouring test until scouring is balanced, recording the scouring depth and the scouring range, and converting the scouring depth and the scouring range into prototype quantities. According to the method, the superposition effect of actual rotating tidal current and waves in a sea area can be well simulated, the scouring form conforming to the sea area site is simulated, and therefore the local scouring condition of the single-column composite barrel type foundation under the actual wave current condition can be accurately judged.

The invention relates to the technical field of fluid dynamics experimental measurement, and discloses a water tank experimental device and method for muddy current transportation of micro-plastics, the device comprises a water tank device main body, an optical measurement subsystem and an ultrasonic Doppler flow velocity measurement system, an ultrasonic emission path and an optical measurement window are overlapped in space, and the optical measurement subsystem and the ultrasonic Doppler flow velocity measurement system are arranged in the water tank device main body. The method comprises the following steps: performing first fluorescence labeling and second fluorescence labeling on the micro-plastic particles and the sediment particles; synchronously acquiring optical data and acoustic data in the cross window; respectively establishing a concentration correction function and a flow velocity correction function by taking acoustic backscattering intensity data and flow velocity data as references in the cross window; applying the correction function to the whole optical window to obtain a globally corrected concentration field and a globally corrected flow velocity field; and distinguishing and quantifying the micro-plastics and the sediments based on the corrected data. Through the cross correction principle, the problem of signal distortion of optical measurement in high-turbidity fluid is solved.

A multifunctional circulating flume test device and method for simulating riverbank slope damage under scouring and seepage effects belongs to the field of hydraulic engineering technology. Its water supply system includes pipelines, a water supply tank, a water pump, a leveling tower, and a drainage trough for providing water flow and drainage. The flume system includes a water intake trough, an energy dissipator, a circulating flume, a limiting module, and a tailgate for providing water flow channels and riverbank plasticity. The filtration system includes a filter pool, filter plates, and baffles for filtering and settling particles in the water and providing circulating water flow. The support system includes an adjustable support for supporting the entire circulating flume and providing slope. This invention overcomes the shortcomings of existing flume devices in simulating riverbank collapse tests due to fixed river morphology and limited functionality. It can simulate the scouring and damage process of straight riverbanks and study the scouring and damage process of concave and convex banks under varying bend conditions, providing theoretical and technical support for ecological bank protection engineering design and riverbank disaster prevention and mitigation. It can meet the multifunctional needs of scientific research and engineering practice.

This invention proposes an experimental apparatus for simulating solute migration and transformation in a heterogeneous riparian subsurface flow zone. The apparatus includes: a riparian simulation tank comprising several identical plexiglass components A and two identical plexiglass components B, wherein the left end of plexiglass component A is a dynamic head flume simulating river water, the middle part is a sand flume simulating a portion of the riparian subsurface flow zone, and the right end is a constant head flume simulating groundwater; a water level control system including a water supply component, a drainage component, and a water level control component; and a pore water sampling system including several water sample collection components buried within the sand flume. Compared with existing technologies, this invention, by increasing the number of plexiglass components A and filling their sand flumes with different types of sand to simulate the three-dimensional heterogeneity of riparian sediments, combined with the water level control and pore water sampling system, can study the spatiotemporal evolution of solute migration and transformation in the heterogeneous riparian subsurface flow zone and its influence on solute migration and transformation in the subsurface flow zone.

The utility model provides a kind of assembly type torrent chute assembly, it is related to torrent chute technical field, including torrent chute body, torrent chute body is set to slope, and water channel is provided in torrent chute body;Baffle is configured as multiple interval settings in water channel, multiple baffles are respectively connected with the bottom wall and side wall of water channel, and pouring groove for pouring concrete is formed between baffle and the bottom wall and side wall of water channel.The utility model sets up interval multiple baffles in water channel, and each baffle is respectively limited with the bottom wall and side wall between water channel to form pouring groove, and the concrete in multiple pouring grooves can form water fall in water channel after solidification, avoid to support formwork in water channel alone and gradually cast-in-place concrete, improve construction efficiency, the connection stability of baffle and torrent chute body is good, improve the structural stability of torrent chute assembly, to prolong the service life of torrent chute assembly.

This invention provides a slope scour simulation test device based on soil particle staining tracers, comprising: an adjustable slope scour section connected downstream of a water supply unit, including a slope flume and a slope adjustment component at its bottom; the slope flume contains, from bottom to top, a concrete layer, transparent test particles, and tracer particles; and a data acquisition and analysis unit for acquiring test data under different working conditions, including test condition data and image sequences of the adjustable slope scour section, identifying and tracking tracer particles of different sizes in the image sequences, and outputting the motion parameters and initiation parameters of the tracer particles. By combining the test condition data under multiple working conditions and the corresponding motion and initiation parameters of the tracer particles, the device quantitatively characterizes the initiation, migration, and deposition mechanism of slope particles under runoff-seepage coupling. This invention can simulate slope scour under runoff-seepage coupling conditions, accurately recording and analyzing the motion behavior of slope particles under different working conditions.

An experimental device and method for measuring a motion probability of nonuniform sediment are provided. The method includes: dyeing sediment of different particle sizes to obtain nonuniform dyed sediment, sticking sediment with the same grades to the bottom of a flume to form a rough plate; soaking the nonuniform dyed sediment, laying the nonuniform dyed sediment on the sediment feeder, transporting the sediment by water with given intensity, and once the flow is stable, starting the sediment feeder to perform a test until the sediment stops moving. Collecting, drying and sieving the sediment in the bedload collector and the suspended load collector, and weighing the dyed sediment of different particle sizes. Computing the incipient probability and the suspension probability respectively by measuring the weight ratios of the sediment of different grades from the two collectors to the initial ones.

This utility model discloses a water measurement and monitoring device for open channels in siltation irrigation areas, belonging to the field of water conservancy equipment technology. It includes a measuring flume body, a siltation detection component, a water volume monitoring unit, and multiple vibration units. The measuring flume body, with a double-layer structure and open ends, is located on the inner wall of the channel, and the width direction of the flume body is consistent with the width direction of the channel. The siltation detection component is located at the top of the measuring flume body, facing towards the bottom of the flume body, and its siltation detection element can reciprocate along the width direction of the flume body. The water volume monitoring unit is arrayed on the inner wall of the measuring flume body for monitoring the channel water level. Multiple vibration units are fixed within the interlayer space of the measuring flume body, with some working end faces of each vibration unit abutting against the inner wall of the measuring flume body on the side closest to the channel. This not only reduces the error in water delivery volume due to the degree of siltation but also improves the accuracy of the measurement data.

The invention discloses a hydrodynamic sediment physical model experiment method for simulating variable tide level combined wave action. The method comprises the following steps: building a physical model experiment system comprising an experiment water tank, a tide level simulation system, a wave generation system and a measurement system; determining a model tide level process and a wave element sequence according to the prototype environment data; calibration of control parameters of the tide level simulation system is carried out in an empty water tank state, and calibration of control parameters of the wave generation system is carried out according to different water depths and wave elements; after a bottom bed model is laid, the two systems are operated synchronously, the water level changes dynamically, corresponding waves are generated, and variable tide level and wave combined action simulation is achieved; and hydrodynamic force and bed topographic data are collected through the measuring system for analysis. Accurate combined simulation of dynamic sea level change and wave action is achieved, the sea level simulation system is simple in structure, low in cost and easy to install and control, the simulation precision of the complex water and sediment movement process is improved, and an economical and reliable experimental means is provided for coast engineering research.

The utility model relates to the technical field of water diversion aqueducts, and discloses a reinforcing mechanism for a high and large aqueduct in a deep water area, the reinforcing mechanism comprises a fixed beam and two moving tables, a first sliding groove is formed in the fixed beam, a two-way screw rod is rotatably connected in the first sliding groove, and a rotating handle is rotatably arranged on one side of the two-way screw rod; first threaded holes are formed in the two sliding blocks in a penetrating mode, and clamping plates are fixedly connected to one sides of the upper ends of the two moving tables. The reinforcing mechanism for the high and large aqueduct in the deep water area can be adjusted according to the actual size and shape of the aqueduct, the structure of the device is relatively simple, the connection mode between components is clear, installation and maintenance are easy, meanwhile, due to the fact that the number of the components is relatively small, the fault occurrence probability and the maintenance cost are reduced, and the service life of the aqueduct is prolonged. The reinforcing mechanism for the high and large aqueduct in the deep water area has the advantages of being efficient in adjustment and fixation, high in stability and adaptability, easy to install and maintain, safe, reliable and the like.

The invention discloses a pier scour prediction method and system based on a single-beam sonar and water tank experiment, and the method comprises the steps: carrying out the quantitative evaluation of a pier position in a navigable river channel, and selecting a pier with the highest comprehensive scour risk as a monitoring object; acquiring field flow field parameters; setting a pier model and a riverbed scene in the water tank, and carrying out a water tank scouring experiment; detecting the section of a scouring pit on the upstream side of the pier after the water tank scouring experiment, and obtaining a curve shape from the pit bottom to an edge transition area; extracting water tank scouring experiment data, and constructing a training data set; training a pre-established pier scouring curve prediction model by adopting the training data set; and acquiring field real-time data and inputting the field real-time data into the trained pier scour curve prediction model to obtain a pier scour prediction curve. According to the method, a small number of sonar sensors are installed on actual piers to monitor the depth of the scouring pit, and calculation and prediction of the section curve of the scouring pit of the multiple piers of the actual bridge are achieved in combination with a prediction model trained through a water tank model experiment and a data driving method.

A method for monitoring and calculating the rainfall collection effect of transmission towers includes the following steps: constructing a rainfall trough; constructing a diversion trough; constructing a measuring trough; installing a Parshall flume; installing a rigid frame, an ultrasonic probe, and a flow meter; calculating the catchment level; calculating the catchment flow rate; calculating the equivalent rainfall intensity; and calculating the rainfall collection effect. This invention provides a method for monitoring and calculating the rainfall collection effect of transmission towers, capable of calculating equivalent rainfall intensity and rainfall collection effect, filling the gap in the lack of indicators and calculation methods for quantifying the rainwater collection effect of transmission towers.

The invention discloses a two-dimensional wave-water flow numerical water tank building method based on an ISPH method and adding a wave absorption area and application, and adopts a method of combining the ISPH method with a sponge layer wave absorption theory and a modified k-epsilon turbulence model to build a wave-water flow combined action two-dimensional numerical water tank model. Accuracy and applicability verification is carried out on the two-dimensional numerical water tank model through the propagation process of waves on the coral reef section, the change of the wave height along the reef and the change hydrodynamic characteristics of the horizontal flow speed, and hydrodynamic characteristic change analysis is carried out after coral reef area composite engineering activities. And / or the method is used for analyzing the influence of breakwater construction on the coral reef terrain hydrodynamic environment under the condition of the regular wave and water flow coupling effect. The simulation result of the numerical model after the k-epsilon turbulence model improved by adopting the wave absorption theory and coupled and corrected is well matched with the experimental result of the physical model, and the problem that the kinetic energy index of turbulence in the potential flow area is increased before the waves are broken is obviously improved compared with that of a traditional method.

The application discloses a large water body eutrophication rapid treatment method and a special system thereof, and comprises a harbor type net enclosure captive breeding salvage unit, a water level self-adaptive cutting pump suction unit, a flume self-flow transportation unit and a solid-liquid separation resource unit. The method absorbs pollutants through net enclosure captive breeding purification organisms, and the whole net is dragged to a shore-based still water harbor by a tugboat during salvage. The organisms enter a cutting bin through a water level self-adaptive gate and the net is recovered synchronously. After the organisms are cut and broken into slurry, the slurry is lifted to an overhead flume by a cutter suction pump, and is self-flowed to a solid-liquid separation bin by gravity. Finally, the slurry is dewatered through filter pipe seepage, anaerobic fermentation and enhanced pressure filtration, so as to realize resource utilization of biogas, organic fertilizer and irrigation water. The application has very strong treatment capacity, is ecological friendly, has very low energy consumption and cost, and can rapidly improve the water quality of a large water body from poor V class to I-II class.

The present application relates to the field of structural deflection monitoring, and particularly relates to a high and large flume deflection monitoring method based on static level, which comprises a monitoring device and a flume midspan deflection acquisition method using the monitoring device; the monitoring device comprises a flexible static level tank and a liquid level observer; the flexible static level tank is laid on the top of a straight wall section on one side of a target flume, and water is stored in the flexible static level tank; three measuring points are arranged on the flexible static level tank, and the three measuring points are respectively located at the support and the midspan of the target flume; each measuring point is provided with a liquid level observer; the flume midspan deflection acquisition method comprises the following steps: calculating the rigid body displacement δ1 of the target flume midspan, calculating the relative displacement δ2 of the target flume midspan and one end support, δ = δ2- δ1, and the bending deformation δ is the midspan deflection; compared with the prior art, the present application is less affected by uneven ground subsidence, has smaller error, higher precision, and is convenient to operate and maintain.

The invention discloses a non-connected river ecological calculation method, and belongs to the field of river ecological calculation, and the method comprises the steps: simulating river environments in different connected states through constructing a multifunctional experiment water tank system, and collecting hydrodynamic force, water quality and biological multi-dimensional parameters; establishing a hydrodynamic force-water quality-water ecology coupling model to realize synchronous calculation of physical, chemical and biological processes; a non-connectivity index is innovatively proposed, and river non-connectivity features are quantified from four dimensions of longitudinal, transverse, vertical and time. According to the method, the defects of a traditional method in the aspects of dynamic water environment simulation, multi-dimensional non-connectivity representation and multi-process coupling are overcome, the transportation-retention process of the phosphorus element under the conditions of manual intervention and rainfall runoff can be accurately analyzed, and a reliable technical means is provided for ecological influence assessment of channel improvement engineering and river ecosystem management.

The application discloses a two-dimensional wave-current numerical flume construction method based on an ISPH method and addition of a wave absorbing area and application. k-ε The method combines the ISPH method, the "sponge layer" wave absorbing theory and a modified k-ε turbulence model to construct a two-dimensional numerical flume model of wave-current interaction, and verifies the accuracy and applicability of the two-dimensional numerical flume model through the wave propagation process on the coral reef profile, the wave height change along the reef and the variation of the hydrodynamic characteristics of the horizontal flow velocity, and is used for analyzing the change of the hydrodynamic characteristics of the coral reef area after composite engineering activities, and / or used for analyzing the influence of the construction of a breakwater on the hydrodynamic environment of the coral reef topography under the condition of the coupling action of regular waves and water flow. The simulation result of the numerical model after the wave absorbing theory is improved and coupled with the modified k-ε turbulence model is in good agreement with the experimental result of the physical model, and the problem of the exponential growth of the turbulence kinetic energy index in the potential flow area before wave breaking is obviously improved compared with traditional methods.

This invention discloses a flow calibration device for open channel weirs and flumes based on mechanical control principles, relating to the field of flow meter calibration technology. The device includes an open channel to be tested, connected to an inlet assembly comprising a standard flow meter. The open channel includes a Parshall flume connected to the flow meter under test. The flow meter reads the upstream and downstream water levels within the Parshall flume. A lifting assembly is located downstream of the Parshall flume, comprising a lifting plate that moves up and down. Fluid flows over the lifting plate, controlling the downstream water level. The flow meter, based on the upstream and downstream water levels and preset submerged flow correction data, obtains the corresponding submerged flow rate and compares it with the standard flow rate obtained from the standard flow meter. By controlling the downstream water level, the open channel weirs and flumes flow meter is placed in a set submerged flow state, and the submerged ratio is adjustable, achieving the effect of conveniently calculating the flow indication error of the open channel weirs and flumes flow meter under different flow parameters.

This invention discloses a method for simulating sediment erosion around offshore wind turbine foundations using an ISPH-modified k-ε turbulence model. The method includes the following steps: establishing an ISPH discretization algorithm for solving the ensemble-averaged mass conservation equation and momentum conservation equation; modifying the standard k-ε turbulence model; and calculating the turbulent eddy viscosity ν in the Reynolds stress tensor expression. t This invention introduces the critical initiation theory on slopes to modify and extend the traditional two-dimensional sediment initiation model, establishing a three-dimensional sediment initiation model. A local scour experimental flume model for a single pile foundation of an offshore wind turbine is established, along with a corresponding ISPH numerical flume model. The experimental and numerical flume models respectively simulate the sediment scour process around the cylinder, and the numerical simulation results are compared, verified, and analyzed with the experimental results. This method can effectively simulate the sediment erosion process around a single pile foundation of an offshore wind turbine, with short computation time and meeting the needs of practical engineering.

A system and method for creating clear ice is described. The system may include a housing including a plurality of elongated troughs. Each of the plurality of elongated troughs may have at least one flume surface wall in thermal communication with a cooling source while the housing is immersed in a fluid bath. The system may further include at least one fluid inlet positioned to provide a fluid flow to the housing, and means for distributing the fluid flow from the at least one fluid inlet into the plurality of elongated troughs while the housing is immersed in the fluid bath and during freezing operation of the device, while maintaining substantially laminar fluid flow and substantially equal fluid pressures along the plurality of elongated troughs.

The utility model discloses a self-calibration water depth-water flow-wave test water tank device which comprises a water tank, one end of the water tank is provided with a water pump, the other end of the water tank is provided with a water inlet / outlet, one side of the water inlet / outlet far away from the middle part of the water tank is provided with a wave maker, and the middle part of the water tank is provided with a lifting platform which comprises a slope and a platform. The top of the slope is flush with the platform face of the platform, and a monitoring mechanism is arranged at the junction of the slope and the platform. According to the utility model, the lifting platform is arranged in the water tank, the monitoring mechanism is arranged on the lifting platform, and the height is changed through the lifting of the lifting platform, so that the rapid change of the water level in the water tank is realized; the height of the lifting platform and the output power of the water pump and the wave maker can be adjusted in real time, the needed water depth, flow speed and wave height are obtained, and the problem that the water depth and wave deviate from the water depth and wave needed by the test due to the fact that the traditional test water level is raised or lowered is solved.

This invention provides a synergistic method for soil-rock and ecological disaster mitigation and flow control resilience in debris flows, comprising the following steps: Step 1: Conducting on-site surveys and parameter collection in the watershed to obtain the topographic features, sediment source distribution, and hydrological information of the debris flow watershed; Step 2: Designing the geometric dimensions of the main structure based on particle size distribution and topographic features; Step 3: Designing the main structure for graded flow mitigation and drainage; Step 4: Identifying the ecological species in the watershed and surrounding environment, and conducting ecological design in conjunction with the main structure configuration; Step 5: Conducting flume physical model tests to calculate the energy dissipation rate and flow control capacity of the main structure configuration method and technology for debris flow disaster mitigation and flow control; Step 6: Based on the test results, constructing a three-dimensional fish-scale flume model, and conducting numerical simulations on debris flow scenarios of different scales, particle sizes, and rainfall conditions to correct and optimize the soil-rock and ecological synergistic configuration mode. This application proposes a synergistic method for rock-soil-ecological disaster mitigation and flow control resilience for debris flows in watersheds. This method can disperse the mainstream impact energy of debris flows to form local backflow, thereby controlling the flow direction of debris flows to avoid buildings and people. It organically combines graded flow mitigation and drainage of rock and soil structures with ecological materials and vegetation measures, thereby improving the adaptive recovery capacity of the resilience control system and the ecological diversity of the watershed, and realizing the sustainable and comprehensive management of debris flows.

The invention provides a riprap displacement determination method and system. The method comprises the steps that flow field parameters of a river reach under different incoming flow conditions are simulated and studied based on a three-dimensional water and sediment-bed surface erosion and deposition model; designing and executing a generalized water tank test on the basis of the flow field parameters to obtain movement tracks of the riprap material in different hydrodynamic environments; setting throwing parameters according to the movement track, constructing a riprap drift distance calculation model, and calibrating key coefficients in the riprap drift distance calculation model; and combining the calibrated riprap drift distance calculation model with the three-dimensional water and sand-bed surface erosion and deposition model, and calculating and obtaining the riprap displacement under a specified incoming flow condition and block stone characteristics. According to the method, the motion law of the riprap material in different hydrodynamic environments is researched, and theoretical support is provided for solving the problems of uneven settlement, insufficient construction precision and the like in the submerged spur dike construction process.

The present application relates to a kind of experimental scale underwater topography real-time monitoring and three-dimensional reconstruction method, belong to the technical field of pool and flume model test.It includes: track is laid on the flume and sets water walking platform;Underwater measuring device connects platform, including angle adjustable support, binocular industrial camera, bar laser emitter and lighting equipment;Mobile platform synchronous acquisition laser stripe deformation image sequence;After image enhancement, laser stripe extraction and stereo matching, profile point cloud is generated;Combined with platform displacement, complete underwater three-dimensional topographic map is reconstructed by splicing.The method avoids repeated drainage, realizes continuous monitoring in scouring process, can still efficiently obtain high-precision terrain data under low texture and turbid water body, and has reasonable structure and strong adaptability.

The invention relates to the technical field of river simulation devices, in particular to a water tank structure for simulating deposition sequences under different hydrodynamic conditions. Comprising a table body which is provided with a water tank and a placing cavity. Different hydrodynamic conditions are simulated by adjusting the opening and closing degree of the jack; a water tank and a transparent accumulation box are arranged, so that planar and vertical deposition sequences can be simulated, and a vertical deposition result can be conveniently checked; by arranging a water suction pump and a conveying pipe, water is fed into the mixing tank, and the water quantity is controlled by a water quantity scale; gravel falls to the intercepting plate through the gravel box, and the gravel amount is controlled by the weight sensor, so that water-sand equal-proportion mixing is realized. Different river types are simulated by simulating different hydrodynamic conditions as main clues and adjusting the inclination angle of the device, comparison of the different river types is established on a vertical sequence, and the difference between the different river types is analyzed and researched.

The application provides a two-dimensional automatic flume device and a control system, and relates to the field of hydraulic engineering.The two-dimensional automatic flume device comprises a flume system, a water level measuring system, a water supply and return control system, a sand-laden flow supply system and an automatic slope changing system.The flume system comprises a flume frame, a flume main body and sliding rails, and a water inlet and a drainage outlet formed in the flume main body.The water level measuring system comprises at least one ultrasonic water level meter.The water supply and return control system comprises a comprehensive control box, a water supply device, a water supply pipe and a water return pipe.The comprehensive control box is used to obtain water level measured information from the at least one ultrasonic water level meter, and to control the water level of the flume main body on the basis of the water level measured information.The sand-laden flow supply system is used to supply sand-laden flow to the flume main body.The automatic slope changing system is used to control the slope of the flume main body.The device provided by the application solves the problem of insufficient automation and informatization level of the existing flume device, and the problem of insufficient control precision and observation precision of the sedimentary geological process.

The self-cleaning diversion canal comprises a canal body, a rotating roller is arranged at the position, close to the middle, in the canal body, a plurality of grid plates which are evenly distributed are fixedly connected to the rotating roller, and rotating rods are fixedly connected to the front wall and the rear wall of the rotating roller correspondingly; the other ends of the rotating rods are movably connected with the inner walls of the front side and the rear side of the canal body through waterproof bearings, first empty grooves are formed in the positions, close to the front side and the rear side of the rotating roller, in the canal body, and the ends, away from the rotating roller, of the rotating rods penetrate through inner rings of the bearings and extend into the first empty grooves; two first bevel gears arranged in the left-right direction are arranged at the positions, close to the lower portion, in the first empty groove, rotating shafts are fixedly connected to the side walls of the sides, away from each other, of the two first bevel gears located on the right side, and the other ends of the rotating shafts are movably connected with the inner wall of the first empty groove through bearings. A transmission belt is in transmission connection between the rotating shaft and the rotating rod through grooved wheels, the diameter of the grooved wheel located on the upper portion is far larger than that of the grooved wheel located on the lower portion, and through a series of structures, the device has the advantages of being high in cleaning efficiency, not prone to blockage, convenient to collect and treat and the like.

The utility model provides a low-flow hydrological flow measuring groove structure for small and medium-sized rivers. The foundation is attached to the two sides of a riverbed, the isolation beam is arranged in the river flow direction, a measuring groove is formed in one side of the isolation beam, a water collecting pool is formed in the other side of the isolation beam, an upstream water retaining beam and a downstream water retaining beam are arranged at the longitudinal ends of the water collecting pool respectively, and an auxiliary unit used for cleaning sediment at the bottom is arranged at the bottom of the water collecting pool. The water collecting tank is arranged as an energy dissipation building, so that the material consumption is reduced, and the construction difficulty is reduced; the auxiliary unit is arranged in the water collecting tank, silt in the water collecting tank is scoured out of the water collecting tank in cooperation with the flow speed of water flow, and the risk that the silt hardens in the water collecting tank is reduced.

The present application relates to the technical field of hydraulic engineering landscape design, and particularly relates to a canyon short tower cable-stayed flume design method based on landscape optimization and a program product, the method comprising: constructing a parameterized three-dimensional geometric model of the cable-stayed flume; obtaining a qualified model meeting a structural safety standard; fusing the qualified model into a canyon three-dimensional digital scene and obtaining a flume scene rendering image under a preset viewing point; constructing a landscape evaluation index system and quantitatively calculating a landscape comprehensive evaluation index according to the landscape evaluation index system; the present application realizes organic integration of the flume and the canyon landscape, and provides a theoretical basis and a practical design path for landscape-oriented structure design of similar complex topography hydraulic engineering.

The utility model belongs to the technical field of fluid mechanics test devices, and particularly relates to a fluid mechanics test circulating water tank which comprises a rectification section, the left side of the rectification section is connected with a contraction section, the left side of the contraction section is connected with a test section, the left side of the test section is connected with a pressurization section, and the left side of the pressurization section is connected with a pressure stabilizing water tank. A first guide vane is installed in the middle of the interior of the pressure stabilizing water tank, second guide vanes are installed on the front side and the rear side of the interior of the pressure stabilizing water tank, the first guide vane and the second guide vanes are perpendicular to each other, and a connecting pipe is connected to the lower end of the side, adjacent to the rectifying section, of the pressure stabilizing water tank. Compared with a traditional circulating water tank, the circulating water tank for the fluid mechanics test has the advantages that the length of the water tank is greatly shortened, the circulating water tank is suitable for an experimental environment with limited space, and the problem that a common circulating water tank in the background technology needs a relatively long length to improve the uniformity and stability of water flow is solved; and therefore, a relatively high space requirement on a laboratory site is proposed.