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Simulations of the Three-Dimensional Total Dissolved Gas Saturation Downstream of Spillways Under Unsteady Conditions

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Abstract

Dams are often operated in a way to discharge over the spillways, which would cause a high dissolved concentration of air and be harmful to fish. The bubble transfer and the water surface transfer play an important role in affecting the concentration of the Total Dissolved Gas (TDG). Based on recent numerical simulations of the total dissolved gas saturation, in this article, a two-phase TDG transport equation is adopted to develop an unsteady three-dimensional (3-D) two-phase flow Computational Fluid Dynamics (CFD) model, including a number of parameters such as water depth, pressure and air volume entrained. This model is used to predict the hydrodynamics and the TDG distribution under unsteady discharge conditions. Good agreement between measured and numerical results is obtained for a case study.

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Authors and Affiliations

  1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China

    Xiao-li Fu, Dan Li & Xiao-feng Zhang

Authors
  1. Xiao-li Fu
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  2. Dan Li
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  3. Xiao-feng Zhang
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Corresponding author

Correspondence to Xiao-feng Zhang.

Additional information

Project support by the National Natural Science Foundation of China (Grant No. 50909075), the Doctoral Program Foundation of Institutions of Higher Learning of China (Grant No. 20090141120030) and the Fundamental Research Funds for Major Universities (Grant No. 5082017).

Biography: FU Xiao-li (1979-), Female, Ph. D., Lecturer

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Fu, Xl., Li, D. & Zhang, Xf. Simulations of the Three-Dimensional Total Dissolved Gas Saturation Downstream of Spillways Under Unsteady Conditions. J Hydrodyn 22, 598–604 (2010). https://doi.org/10.1016/S1001-6058(09)60093-7

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  • DOI: https://doi.org/10.1016/S1001-6058(09)60093-7

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