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河道温度及浓度场的平面二维数值模拟
引用本文:董耀华.河道温度及浓度场的平面二维数值模拟[J].长江科学院院报,1997,14(2):22-26.
作者姓名:董耀华
作者单位:河流研究所
摘    要: 立了河道水流、温度及浓度输运的水深平均平面二维数值模拟模型,由模拟水流、温度及浓度和紊流3个子模型组成。该模型在计算定解条件 模型参系数取值、河道岸边界和动边界模拟以及水流自动调整计算思想等方面进行了适用可行的处理。应用该模型进行了试验室空腔水槽温度和含沙量场以及长江口南支河段温排水及盐水入侵的数值模拟计算,证明了模型的可行性和适用性。

关 键 词:河道    温度及浓度场    二维数值模拟    SIMPLER算法    紊流模拟  k-ε方程    恒定流    非恒定流

Two Dimensional Numerical Simulation of Temperature or Concentration Field in River Channels
Dong Yaohua.Two Dimensional Numerical Simulation of Temperature or Concentration Field in River Channels[J].Journal of Yangtze River Scientific Research Institute,1997,14(2):22-26.
Authors:Dong Yaohua
Abstract:A depth average 2 D numerical simulation model for flow, temperature or concentration field in river channels is established. It consists of three submodels, i. e., flow model, temperature or concentration model and turbulence model. Some suitable treatments for the model are conducted in aspects of the control conditions for calculation, valuation of model parameters and coefficients, modeling of river bank and movable boundaries, and technique of flow automatic adjusting calculation etc. Applying this model, numerical calculations are carried out for temperature and sediment concentration fields in laboratory cavity flume and for temperature drainage and salt water encroachment in southern branch river reaches of the Yangtze river estuary. From above calculations, it is proved that the mathematical model is feasible and applicable.
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