基于非正交同位网格的SIMPLE算法及应用

Algorithm and application for SIMPLE based on nonorthogonal collocated grid

利用有限容积法建立了基于非正交同位网格的SIMPLE算法.详细给出了控制方程以及压力修正方程的离散过程,并对倾斜度分别为45°和30°的斜方腔内的流场进行了数值模拟,同时验证了算法及程序的正确性.在此基础上模拟人字形屋顶房间复杂房间内的气流分布.结果表明,基于非正交同位网格的SIMPLE算法具有编程简单、计算量存储量小、计算效率高等优点,可用于几何形状比较复杂流场的计算.

The SIMPLE algorithm was established based on nonorthogonal collocated grid by using finite volume method. The process of disperse on control equations and pressure correction equations was given. The algorithm was applied to simulation of the flow field in an inclined cavity with a tilt angle of 45° and 30°It assesses the accuracy of algorithm and programs. The algorithm was used to simulate airflow distribution in a room with gable roof. The results show that the SIMPLE algorithm, with the merits of simple programming, small amount of calculation, high efficiency of calculation and fast convergence, can be used for the calculation of flow fields with complex shape.