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Temperature difference-sediment coupling density flow simulation test system

A kind of density flow, simulation experiment technology, applied in the direction of fluid dynamics test, hydraulic model, test of machine/structural parts, etc., to achieve the effect of uniform particle size, small particle size, and reduce the interference of flow field

Active Publication Date: 2013-12-04
SICHUAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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  • Temperature difference-sediment coupling density flow simulation test system

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Experimental program
Comparison scheme
Effect test

Embodiment

[0037] Instruments and equipment used in this embodiment:

[0038] 1 camera is used as an auxiliary detection device for monitoring the entire experiment process. There are 10 ZDR model temperature self-recording instruments 13 in total, each of which is connected with two temperature probes, namely the first temperature probe 10-1 and the second temperature probe 10 -2, a total of 20 temperature probes, 12 turbine flowmeters, model LWGY-DN15, 2 water pumps, heating device 6 is to install a number of light bulbs on a wooden board, and the wooden board is heated across the top of the water tank 8. The total bulb is 750W.

[0039] According to the rated flow of the water pump 2 used, the experimental adjustable flow range is 0-1.2 m 3 / h, and the test water pump can also be replaced to increase the adjustable flow range of the test.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00E02B1/02
Inventor 安瑞冬李嘉李克锋易文敏李然邓云梁瑞峰脱友才蔡俊驰
Owner SICHUAN UNIV
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