2-D FLOW SIMPLEC ALGORITHM IN NON-ORTHOGONAL CURVILINEAR COORDINATES
2-D FLOW SIMPLEC ALGORITHM IN NON-ORTHOGONAL CURVILINEAR COORDINATES
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DOI：
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发表时间：
2003
影响因子：
2.4
通讯作者：
X. Wu;Y. Shen;Y. Zheng
中科院分区：
文献类型：
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作者：
X. Wu;Y. Shen;Y. Zheng
本文采用拉普拉斯方程进行坐标变换，生成正交曲线网格，将浅水方程组转换到曲线坐标系下，在离散过程中，采用B型交错网格对程序进行简化，采用水位扫描法结合壁面函数处理动边界，求解非正交曲线坐标系下的双k-ε湍流方程，采用SIMPLEC算法对非正交网格的误差进行了修正，并利用美国科罗拉多州Fall河的实测资料对模型进行了验证，计算结果与实测资料吻合较好。
In this paper,the Laplace equation was adopted in coodrdinate transformation to generate orthogonal curvilinear grid.The shallowwater equations were transformed under the curvilinear coordinate system.During discretization,B type staggered grid was introduced to simplify the program.Water level scanning method combined with wallfunction was used to treat the moving boundary.The turbulence model of double ke equations in nonorthogonal curvilinear coordinate was solved through SIMPLEC algorithm,which modified the error derived from the nonorthogonal grid.The model was validated by the measured data in the Fall River in Colorado State,US.The calculation results were in good accordance with the measurement.