非正交曲线坐标下水流和污染物扩散输移的数值计算

吴修广,沈永明,郑永红,杨志峰

中国工程科学 ›› 2003, Vol. 5 ›› Issue (2) : 57 -61.

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中国工程科学 ›› 2003, Vol. 5 ›› Issue (2) : 57 -61.
学术论文

非正交曲线坐标下水流和污染物扩散输移的数值计算

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Numerical Computation of Flow and Pollutant Diffusion - Transportation With Non-orthogonal Curvilinear Coordinates

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摘要

基于非正交曲线坐标下水流与污染物扩散输移的深度平均数学模型,采用k-ε双方程湍流模型和速度—水深耦合算法,应用于实验室连续弯道的水流及污染物扩散输移的数值模拟,分别计算了流场及岸边和中心污染物排放的浓度场,得到与实测值吻合良好的计算值。

Abstract

Based on depth-averaged mathematic model of flow and pollutant transportation in non-orthogonal curvilinear coordinates, the k-ε double equations´ turbulence model and the coupling arithmetic of velocity-water depth are adopted, which are applied to the numerical simulation of the flow and the contamination diffusion-transportation. The flow field and concentration of discharge both along bank and in the centerline of the meandering channel in laboratory are calculated, and the calculating results accord well with the measured data.

关键词

曲线坐标 / 连续弯道 / 扩散输移 / SIMPLEC算法 / 浓度场

Key words

curvilinear coordinates / meandering channel / diffusion-transportation / IMPLEC algorithm / concentration field

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吴修广,沈永明,郑永红,杨志峰 非正交曲线坐标下水流和污染物扩散输移的数值计算[J]. 中国工程科学, 2003, 5(2): 57-61 DOI:

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