Low-diffusion preconditioning scheme with linear cut-off parameter  

作　　者：Songping Wu Ning Cao 

机构地区：[1]School of Aeronautic Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China [2]Key Laboratory of Fluid Mechanics(Beihang University),Ministry of Education,Beijing 100191,China [3]China Academy of Aerospace Aerodynamics,Beijing 100074,China

出　　处：《Theoretical & Applied Mechanics Letters》2012年第5期29-32,共4页力学快报（英文版）

基　　金：supported by the National Basic Research Program of China(2007CB714600)

摘　　要：A low-diffusion preconditioning Roe scheme with an adjustable parameter to control the numerical dissipation is proposed. This scheme reflects the real physical dissipation in the extremely low-speed region. The preconditioning parameter in scheme is improved by linear cut-off and correction factor. The numerical results of low-Mach-number/low-Reynolds-number steady solutions of viscous flows past a circular cylinder and past a NACA0012 airfoil show the efficiency of the new scheme.A low-diffusion preconditioning Roe scheme with an adjustable parameter to control the numerical dissipation is proposed. This scheme reflects the real physical dissipation in the extremely low-speed region. The preconditioning parameter in scheme is improved by linear cut-off and correction factor. The numerical results of low-Mach-number/low-Reynolds-number steady solutions of viscous flows past a circular cylinder and past a NACA0012 airfoil show the efficiency of the new scheme.

关 键 词：numerical methods steady flow cylinders PRECONDITIONING AIRFOIL 

分 类 号：TV133.2[水利工程—水力学及河流动力学] V211.7[航空宇航科学与技术—航空宇航推进理论与工程]