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Low-diffusion preconditioning scheme for numerical simulation of low-speed flows past airfoil
Abstract：The preconditioning technique can address the stiffness of a low Mach number flow, while its stability is poor. Based on the conventional preconditioning method of Roes scheme, a low-diffusion scheme is proposed. An adjustable parameter is introduced to control numerical dissipation, especially over the dissipation in the boundary layer and extremely in a low speed region. Numerical simulations of the low Mach number and low Reynolds number flows past a cylinder and the low Mach number and high Reynolds number flows past NACA0012 and S809 airfoils are performed to validate the new scheme.Results of the three tests well agree with experimental data, showing the applicability of the proposed scheme to low Mach number flow simulations. 作者： Author： Qian XIANG Song-ping WU Chun-hian LEE Ning CAO 作者單位： School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, P. R. China;National Laboratory for Computational Fluid Dynamics, Beihang University, Beijing 100191, P. R. China;Ministry of Education Key Laboratory of Fluid Mechanics, Beihang University, Beijing 100191, P. R. China 期 刊： 應(yīng)用數(shù)學(xué)和力學(xué)（英文版） EISCI Journal： APPLIED MATHEMATICS AND MECHANICS 年，卷(期)： 2011, 32(5) 分類號： V211.3 Keywords： numerical simulation preconditioning steady flow airfoil 機(jī)標(biāo)分類號： TP2 O24 機(jī)標(biāo)關(guān)鍵詞： Mach number preconditioning technique Numerical simulations numerical dissipation high Reynolds number low Reynolds number experimental data boundary layer conventional especially method of NACA0012 flow control three Based Roe new 基金項(xiàng)目： the National Basic Research Program of China(973Program)【Low-diffusion preconditioning scheme】相關(guān)文章：
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