摘要
提出一种有限体积显式逐次超松弛并行(FV-pSOR)算法,以提高逐次超松弛(SOR)算法求解不可压缩二维流动控制方程组离散所形成的代数方程组的效率.基于区域分解的思想,将计算域分割成4个子域,构造了离散的一般性代数方程组的显式迭代公式并规划了迭代路径;然后,通过数值求解典型二维方腔流,验证了FV-pSOR算法的有效性.结果表明:与SOR算法相比,所提FV-pSOR算法在计算精度相当的前提下的计算效率提高了数倍.
An explicit finite volume parallel successive over-relaxation(FV-pSOR) iterative method is proposed to improve the efficiency of successive over-relaxation(SOR) iterative method in solving the algebraic equations obtained by discretizing the governing equations of 2-dimensional incompressible flows. Based on the domain decomposition technique, computation domain is separated into four sub-domains, and group explicit SOR schemes are constructed for the algebraic equations with general coefficients in flow problems. Furthermore, the iterative route has been discussed in detail. To confirm availability of this algorithm, a series of calculations for a typical lid-driven cavity flow are performed. It demonstrates that comparing to the SOR iterative method, current FV-pSOR iterative method improves the computation efficiency several folds while the accuracy is not degraded.
作者
张晓慧
柏君励
顾解忡
马宁
ZHANG Xiaohui;BAI Junli;GU Xiechong;MA Ning(State Key Laboratory of Ocean Engineering ,Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,School of Naval Architecture, Ocean and Civil Engineering,Shanghai Jiao Tong University, Shanghai 200240, China)
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2019年第6期681-687,共7页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金面上项目(51279105,BC0100097)
关键词
分组显式
逐次超松弛
并行计算
有限体积
区域分解
group explicit
successive over-relaxation (SOR)
parallel computation
finite volume
domain decomposition
