Low-diffusion Preconditioning Roes Scheme and Simulation of Low-speed Flows
Preconditioning technology is an effective method to simulate low Mach number flows, but the stability of the result is poor relatively. With the traditional preconditioning method on Roes scheme, the dissipation is too large in the boundary layer and extremely low-speed zone, and sometimes the result is unreasonable. Numerical experiments show the numerical dissipation of the scheme has a notable effect on low-speed flow numerical simulation with preconditioning method. A low-diffusion preconditioning Roe scheme by using an adjustable parameter in preconditioning Roe scheme to control the numerical dissipation and the adjustable parameter value rules are proposed. The low-diffusion preconditioning Roe scheme reflects the real physical dissipation in the extremely low-speed zone. In the region similar to the inflow speed, low-diffusion preconditioning Roe scheme can ensure the stability of the flow field. Numerical results show the efficiency of the new scheme and the low Reynolds number steady solutions of viscous flow past a circular cylinder are satisfied.
preconditioning low-speed flows numerical methods steady flow cylinders
Cao Ning Wu Songping
School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics,Bei School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics,Beij
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
305-308
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）