【摘要】 本文对具有不同温度竖壁的封闭容器中二维自然对流问题进行了直接数值模拟 .控制方程在非均匀网格上使用空间二阶精度和时间一阶精度进行离散 ,程序是在国家高性能计算中心 (武汉 )的并行计算机“曙光 1 0 0 0 A”上实现的 .使用 4个结点 ,获得的加速比和效率分别约为 2 .89和 0 .72 .更多还原

【Abstract】 Direct numerical simulation is performed for two dimensional natral convection flow in an enclosed cavity with differentially heated vertical walls. The governing equations under Boussinesq approximation are discretized by finite difference method with second order spatial accuracy and first order time accuracy on a non uniform mesh. The procedure was run on the parallel computer “DAWN1000A” at the National High Performance Computing Center (Wuhan). With 4 nodes, the achieved speedup and efficiency are about 2.89 and 0.72, respectively.更多还原