不同形状空腔顶盖驱动流动的数值模拟
首发时间:2010-04-09
摘要:非结构化网格凭借其对复杂区域的良好适应性,在计算流体力学和计算传热学中得到了广泛的应用。本文利用经典的方腔顶盖驱动流对Delaunay方法和Bubble Packing方法所生成网格的质量以及基于非结构化同位网格的SIMPLE算法进行了验证,发现两种网格均可用于单相流动的CFD计算,垂直与水平中心线上的速度分布与基准解相比非常吻合并可得到良好的结果。随后模拟了正三角形、等腰三角形和梯形空腔顶盖驱动流,并对结果进行了分析。
关键词: 非结构化网格 同位网格 顶盖驱动流动 SIMPLE算法
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Numerical Simulation of Lid-driven Flow in Different Cavities
Abstract:Unstructured grid has been widely used in CFD and computational heat transfer problems because of its adaptability to complicated geometry. In this paper, the quality of unstructured grids generated by Delaunay Triangulation Method and Bubble Packing method is compared by the classical lid-driven square cavity flow solved by SIMPLE algorithm on collocated unstructured grid. The velocity distributions on vertical and horizontal center lines are in good agreement with bench mark, which shows that both of the two grids can be used in CFD. Afterwards, the lid-driven flow in regular triangle, isosceles triangle and trapezoid cavities are simulated and analyzed.
Keywords: unstructured grid collocated grid lid-driven flow SIMPLE algorithm
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