Device for simulating complex stratified flowing water bodies and simulation method thereof

Abstract

The invention discloses a device for simulating complex stratified flowing water bodies and a simulation method thereof. The device comprises multiple circulating water channels and multiple flow-rate closed loop control systems, wherein the multiple circulating water channels include a square water channel, one inner side face of the square water channel is provided with multiple water inlet module sets, and a side face (opposite to the water inlet module sets) in the square water channel is provided with multiple water outlet module sets; and the multiple flow-rate closed loop control systems comprise a water inlet module flow-rate control system for controlling water inlet of the water inlet module sets and a water outlet module flow-rate control system for controlling water outlet of the water outlet module sets, water in a water storage pool, after sequentially flowing through a water pump and the water inlet module flow-rate control system, flows into the water inlet module sets, and water discharged from the water outlet module sets, after flowing through the water outlet module flow-rate control system and a vacuum pump, flows into the water storage pool. According to the invention, various complex water flow forms can be constructed in a same water channel; and the device and method disclosed by the invention have the advantages of strong adaptability, good reproducibility, high similarity of reconstructed flow fields, simple control method, and the like.

Description

technical field [0001] The invention relates to the reconstruction of the water flow form of shallow lakes and river systems, in particular to a device and method for constructing a water flow form with complex layered flowing water in a tank, and belongs to the field of water conservancy and water environment science. Background technique [0002] In natural rivers and lakes, water flows through long-term erosion, transport and accumulation of sediment to create a variety of river channels, such as shoals, deep pools, confluence, narrowing or widening, etc., making the natural water body Flow rates and flow regimes are very complex. At the same time, humans are constantly transforming rivers and lakes, including building dams, building embankments, straightening bends, man-made slope protection, artificial vegetation, etc. These transformations have also made natural rivers similar in shape to straightening and cross-section geometric rules. Changes such as hardening of ri...

AI Technical Summary

Problems solved by technology

At present, there are two types of dynamic water test tanks commonly used: water flow control type and external disturbance type. The water flow control type of water tank mainly controls the water flow speed in the tank by adjusting the flow rate of the water pump and the opening of the tailgate. This kind of tank has a simple structure. , but the ability to control the flow shape is poor, and each working condition can only achieve an approximate simulation of one flow velocity, which cannot simulate the target water body with complex flow characteristics

The external disturbance type flume is mainly by imposing artificial disturbance on the water body boundary of the flume, such as the method of using propeller type, piston type, oscillation type, and blowing type to excite the water body in the flume. The water flow shape constructed by these methods only simulates the natural water body A certain characteristic of the water flow form is still quite different from the real water flow form, which affects the accuracy and precision of the experimental research to a large extent.

[0004] The flow patterns of water bodies in nature are changeable. It is obviously inappropriate to build different tanks for various flow velocity patterns of water bodies, and it is even difficult to do so.

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