非结构网格多段翼型绕流Euler及N-S方程数值模拟  

Numerical Analysis of Multi-Element Airfoil Using Unstructured Grid and Euler and N-S Equations

作　　者：桑为民[1] 鄂秦[1] 李凤蔚[1] 

机构地区：[1]西北工业大学空气动力学研究室,陕西西安710072

出　　处：《西北工业大学学报》2001年第3期336-340,共5页Journal of Northwestern Polytechnical University

基　　金：航空科学基金 (98A5 30 0 5 )资助

摘　　要：描述二维非结构无粘网格和粘性网格的生成方法 ,对二维翼型绕流进行了 Euler及 N- S方程数值模拟。运用推进面方法 ,生成无粘网格 ,进一步结合推进层方法 ,生成粘性网格。应用中心有限体积法 ,采用 B- L代数湍流模型 ,完成了对多段翼型流场的 Euler方程和 N- S方程的数值模拟计算。计算与实验结果对比表明 ,所采用的网格生成技术及流场计算方法是正确。The flow field around a multi-element airfoil described by N-S equations and Euler equations was numerically simulated. The unstructured grid was generated. The advanced layer method was used to generate inviscid grid on the airfoil surface and the advanced front method was used to generate viscous grid on the far field. It is necessary to construct the turbulence reference grid when B-L algebraic turbulence model is used to solve N-S equations. The Euler equations were solved by the centred finite volume method and Runge-Kutta time stepping scheme. Simulation results for a two-element and three-element airfoil were given, which were in agreement with test data. It is shown that the method involving unstructured grid generation and numerical simulation is feasible.

关 键 词：多段翼型 非结构网格 推进面方法 推进层方法 N-S方程 EULER方程 计算流体力学 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]