摘要
本文采用Laplace方程坐标变换方法生成正交曲线网格,并对浅水流动的控制方程进行坐标变换,方程离散时采用B型交错网格。利用"水位扫描法"结合壁面函数法来处理移动边界,用SIMPLEC算法解非正交曲线坐标下的k-ε双方程紊流模型,修正了由网格的非正交性引起的误差。通过对美国Colorado洲FallRiver的资料进行流场验证,计算结果与实测资料基本符合,显示了本模型在不规则水域计算中的实用价值。
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 kε 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.
出处
《水利学报》
EI
CSCD
北大核心
2003年第2期25-30,37,共7页
Journal of Hydraulic Engineering
基金
国家杰出青年科学基金项目(50125924)
高等学校博士学科点专项科研基金项目(2000014112)
辽宁省自然科学基金项目(2001101073)
