一种加速SIMPLE算法迭代收敛的方案及其在河道平面二维水流计算中的应用  

An improvement of the SIMPLE Algorithm and its application in 2-D mathematics model of water flow

作　　者：许慧[1] 高健 李国斌[1] 张新周[3] 

机构地区：[1]南京水利科学研究院,江苏南京210029 [2]长江委长江口水文水资源勘测局,上海200136 [3]河海大学,江苏南京210098

出　　处：《水运工程》2008年第12期9-14,共6页Port & Waterway Engineering

摘　　要：一种加速SIMPLE算法迭代收敛的方案是把SIMPLER与SIMPLEC两种算法结合起来,压力值通过求解压力Poisson方程获得,速度修正值计算式也考虑到了邻点速度修正值的影响。对该方案给出了详细的求解步骤,并通过对长江中游安庆河段平面二维水流流场的计算,将该方案与SIMPLE,SIMPLEC,SIMPLER算法进行了对比。结果表明:该方案有着更好的收敛特性,并且能节省数值计算的时间。An improvement of the SIMPLE algorithm is proposed by combing SIMPLER and SIMPLEC together. In this improved algorithm, the pressure field was determined by the way adopted in the SIMPLER algorithm, while consistency of velocity correction equation by using the method adopted in the SIMPLEC algorithm. Detailed process of the improved algorithm is proposed in this paper. Numerical experiment on the Anqing beach of the Yangtze River shows that this improved scheme can enhance the convergence rate for SIMPLE algorithm.

关 键 词：SIMPLE算法 平面二维水流计算 加速迭代 

分 类 号：TV133[水利工程—水力学及河流动力学]