Temperature difference-sediment coupling density flow simulation test system

Abstract

The invention relates to a temperature difference-sediment coupling density flow simulation test system. The test system comprises a muddy water tank, a water pump, a heating device, a water channel, a turbine flowmeter, a plurality of thermographs and a circulating water pond; the water channel is connected with the water pump and the muddy water tank through a duct, the turbine flowmeter is connected with the duct, temperature probes of each thermograph are arranged at two vertical water temperature measurement positions of the side wall inside the water channel, and the heating device is installed above the water channel. The test system is simple in structure and convenient to operate; by the aid of the test system, the interference of the heating device to a flow field inside the water channel at the density flow test stage in the past is reduced, and the motion process of a sediment density flow in a temperature-layered water body is simulated successfully; special phenomena of advancing of the sediment density flow in the middle layer and the surface layer of the water channel under the influence of vertical water temperature laying are achieved, and in addition, the reliability and the accuracy of density flow analysis and research can be improved.

Description

technical field [0001] The invention relates to a reservoir density flow simulation test system, in particular to a reservoir temperature difference-sediment coupling density flow simulation test system in water conservancy projects, which belongs to the field of water conservancy and hydropower engineering facilities. Background technique [0002] The relative movement of two or more fluids with similar specific gravity that can be mixed due to the difference in specific gravity, that is, if one fluid flows along the direction of the interface, it does not have a global impact with other fluids during the flow process. The flow of sexual mixing phenomenon is called hyperpycnal flow. The water temperature of the reservoir often produces vertical water temperature stratification in the high temperature seasons of the year, such as summer and autumn. The difference in temperature causes the density of the water body to vary in the vertical direction. Finally, due to the influ...

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Problems solved by technology

[0008] 3. There are still relatively few experimental studies on temperature difference-sediment hyperpycnal flow at home and abroad, so further research and analysis should be done on the coupling of temperature difference and sediment hyperpycnal flow.

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