Euler方程数值模拟绕悬停旋翼桨叶的流动

本研究应用格心格式有限体积龙格－库塔时间推进法求解三维欧拉方程，模拟绕旋翼桨叶的流动，民流的作用通过自由尾流分析来求解局部的诱导下洗速度以修正翼型攻角，选择Ｏ－Ｈ型式生成绕桨叶贴体的弦向和展向网格，通过算为进一步寻求有效的Ｅｕｌｅｒ或ＮＳ方程数值解积累了经验。

Numerical Simulation of Flow around Hovering Rotor Blade Using Euler Equations

The finite volume approach in a cell centered formulation and explicit Runge Kutta time stepping scheme are applied to solve three dimensional Euler equations for simulating the flow around a rotor blade. Rotor wake effects are modeled in the form of a correction applied to the angle of attack along the blades. This correction varies along the blade span and is obtained by computing the local induced downwash with free wake analytical technique. A three dimensional body conforming curvilinear grid around the blade is generated by choosing O H topology in chord wise and spanwise directions. By means of the sample calculations the experiences for exploring efficient numerical solutions of Euler/NS equations are accumulated.