鲢鱼溪码头建筑物对河道水流影响的数值模拟

采用正交曲线坐标对赤水河鲢鱼溪码头河段计算域进行了坐标拟合,用有限体积法(SIMPLEC程式)对拟合坐标系下的水流基本控制方程进行了离散,在求解过程中采用了欠松弛技术和逐线迭代法。分析了鲢鱼溪码头工程前后河段内水位、比降及水流流速的变化。研究了码头前沿船舶泊稳条件和码头工程建设对洪水位的影响,得出了在赤水河鲢鱼溪弯道凹岸建港可以将岸线适当推向河心的认识。

Numerical Modeling of Channel Flow Variations due to Lianyuxi Wharf

The governing equations of flow under the body-fitted curvilinear coordinate system are dispersed with the finite volume method.The SIMPIEC procedure,underrelaxation technique and line-by-line method are used in solution of the discrete equations.Variations of water level,gradient & flow velocity caused by the new wharf constructions in Lianyuxi Wharf of Chishui River are analyzed.Influences of the project on mooring conditions and flood control are investigated.And finally,it iscognized that the bank line of the wharf constructions built in semideveloped concave bank can be disposed towards the center of the river properly.