Stratified flow simulation test water channel system

Abstract

The invention relates to a stratified flow simulation test water channel system which includes a reservoir, a submersible pump, a flowmeter, a valve switch, a water channel, a hydraulic jack, a position regulator in the water channel, a position-adjustable water inlet, a grid net, a pulling gate, a digital temperature chain and a sampling tube, a backwater sand punching pipe, a multi-channel recorder outside the water channel, a pump-absorption water sample acquisition case, a drain aperture elevation adjusting device and a position-adjustable water outlet. The water channel system has a simple structure and is easy to operate. The system can simulate a moving process of a stratified flow at the beginning of an inflow stage, and can also simulate the moving process of a stratified flow under the release of a valve flow, a stratified flow having the water inlets at different depths, a stratified flow having different bottom slop coarse degrees, and a stratified flow caused by different shapes and different factors. The system, through addressing the problem of singularity in stratified flow simulation types in traditional stratified flow tests, successfully achieves tests of different stratified flow simulation types, and increases reliability and accuracy of density flow analysis and research.

Description

technical field [0001] The invention relates to a test water tank system in water conservancy projects, in particular to a stratified flow simulation test water tank system suitable for reservoirs in water environment protection technology, and belongs to the field of water conservancy and hydropower engineering facilities. Background technique [0002] When two or more fluids with similar densities are not much different and can be mixed, relative flow occurs due to the difference in specific gravity, that is, if one fluid moves along the direction of the interface, it does not interact with other fluids during the flow process. Global mixing occurs and this flow is called stratified flow. From the perspective of reservoirs in water conservancy projects, due to the large amount of water stored in the reservoir, the depth of the water, and the slow flow of water, during the flood season, the turbid river water containing a large amount of fine-grained sediment sneaks into th...

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Problems solved by technology

[0004] Aiming at the above problems, a variety of tank systems for stratified flow research have been proposed at home and abroad, but the stratified flow problems that can be used for each tank system are relatively simple, that is, most of them are only for a certain kind of stratified flow, and cannot Integrate the simulation of various possible stratified flows and stratified flows under the influence of different factors. For example, the temperature difference-sediment coupled hyperpycnal flow simulation test system only simulates the hyperpycnal flow of sediment under the influence of water temperature The phenomenon that occurs in the middle layer and the surface layer of the tank in the layered water body; it cannot simulate the hyperpycnal flow generated when the sluice is released and the various hyperpycnal flows generated at different depths of the water inlet, and it cannot simulate the roughness of the bottom slope in the water body At the same time, the impact on the underlying layered flow

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