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Journal of Changjiang River Scientific Research Institute >

2013 , Vol. 30 >Issue 4: 34 - 39

DOI: https://doi.org/10.3969/j.issn.1001-5485.2013.04.008

Hydraulics

Motion Characteristics of Mid-layer Adverse Slope Density Current

  • JI Dao-bin ,
  • CAO Qiao-li ,
  • XIE Tao ,
  • YIN Wei-ping ,
  • HUANG Yu-ling ,
  • LIU De-fu
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  • 1.College of Hydraulic & Environmental Engineering, China Three Gorges University, Yichang 443002, China; 2.Engineering Research Center under Ministry of Education on Eco-environment in Three Gorges Reservoir Region, China Three Gorges University, Yichang 443002, China; 3.Guizhou Survey & Design Research Institute for Water Resources and Hydropower, Guiyang 550000, China; 4.College of Resources and Environment Sciences, Hubei University of Technology, Wuhan 430000, China

Received date: 2012-12-18

  Revised date: 2013-04-09

  Online published: 2013-04-09

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Abstract

With the widespread long-term mid-layer intrusion density flow in the tributary bays of Three Gorges Reservoir as a research background, an indoor physical model was built. Three main factors inflow rate, initial water level, and temperature difference were chosen to design various conditions to simulate and investigate the motion characteristics of adverse slope density current in the mid-layer. The variations of hydraulic elements of the density current such as head moving velocity, interface height and head thickness influenced by inflow rate, initial water level, and temperature difference were analyzed. With Channing’s theoretical formulas, the head velocities of mid-layer density current in different conditions were calculated and compared with the measured values. It was found that the difference between the two was not large, and the relative error was less than 5%.

Key words： temperature difference; mid-layer; adverse slope density flow; test

Cite this article

JI Dao-bin , CAO Qiao-li , XIE Tao , YIN Wei-ping , HUANG Yu-ling , LIU De-fu . Motion Characteristics of Mid-layer Adverse Slope Density Current[J]. Journal of Changjiang River Scientific Research Institute, 2013 , 30(4) : 34 -39 . DOI: 10.3969/j.issn.1001-5485.2013.04.008

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