VERIFICATION AND AMENDING OF SIP SOLVER
From the comparison of three examples of typical fluid flow, closed surface, partial opening and full opening, computing adopted SIP (Strongly implicit procedure), TDMA-SOR and ICCG, it is found that advantages of SIP were stability and quick convergence for Dirichlet momentum boundary conditions of outlet; while for Neumann momentum boundary conditions of outlet, it is found that disadvantages of SIP were slow convergence and apt to instability or divergence. Nowadays, industrial users of commercial CFD codes devote to adopt complex iteration method without regarding of the mathematical characteristics of solution method itself. SIP is especially designed for algebraic equations that are discretizations of partial differential equations and does not apply to generic systems of equations. In the inner iteration process, genres of momentum boundary conditions of outlet alternate the mathematical characteristics of SIP, and the factor α (0<α<1) is optimized for Dirichlet boundary, while is un-optimized for Neumann boundary. Optimization scheme of the latter is presented in this paper.
SIP Solver TDMA solver verification convergence
Di Liu Fu-Yun Zhao Guang-Fa Tang Guang-Cai Gong
College of Civil Engineering, Hunan University, Changsha 410082, China
国际会议
北京
英文
2007-09-07（万方平台首次上网日期，不代表论文的发表时间）