Simulation of Viscous Flows Around A Moving Airfoil by Field Velocity Method with Viscous Flux Correction  

作　　者：Ning Gu Zhiliang Lu Tongqing Guo 

机构地区：[1]Department of Aerodynamics,Nanjing University of Aeronautics and Astronautics,29 Yudao Street,Nanjing 210016,China

出　　处：《Advances in Applied Mathematics and Mechanics》2012年第3期294-310,共17页应用数学与力学进展（英文）

基　　金：This work was supported by The National Basic Research Program of China(Grant No.2007CB714600);Funding of Jiangsu Innovation Program for Graduate Education(Grant No.CXLX110170).

摘　　要：Based on the field velocity method,a novel approach for simulating unsteady pitching and plunging motion of an airfoil is presented in this paper.Responses to pitching and plunging motions of the airfoil are simulated under different conditions.The obtained results are compared with those of moving grid method and good agreement is achieved.In the conventional field velocity method,the Euler solver is usually used to simulate the movement of the airfoil.However,when viscous effect is considered,unsteady Navier-Stokes equations have to be solved and the viscous flux correction must be taken into account.In this work,the viscous flux correction is introduced into the conventional field velocity method when non-uniform grid speed distribution is occurred.Numerical experiments for the flow around NACA0012 airfoil showed that the proposed approach can well simulate viscous moving boundary flow problems.

关 键 词：Gust response unsteady Navier-Stokes equations field velocity method viscous flux correction 

分 类 号：O35[理学—流体力学]