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侧壁无滑移、部分滑移与完全滑移三种不同的侧壁边界模拟方法将影响边界约束水域的潮流流态模拟结果。通过平底矩形水池的流场数值模拟,分析了侧壁无滑移与完全滑移两种情况下水池内的流态,讨论了水池入水口附近产生旋涡以及在侧壁无滑移时产生次生旋涡的机理,特别是侧壁部分滑移时不同侧壁粗糙度下水池内产生旋涡及次生旋涡的现象。给出了不同侧壁边界粗糙度下流动分离点的位置以及主旋涡和次生旋涡强度大小的变化。
Three kinds of sidewall simulation methods, including no-slip, partial-slip and complete-slip, will affect the simulation results of the tidal flow in the bounding waters. Through the numerical simulation of the flow field in a flat rectangular pool, the flow regimes in the pool under two conditions of no-slip and complete slip are analyzed. The generation of vortices near the pool inlet and the generation of secondary vortices , Especially the phenomenon of vortex and secondary vortex generated in the pool under different sidewall roughness when the side wall slides partially. The location of the flow separation point and the variation of the intensity of the primary vortex and the secondary vortex under different boundary roughness are given.