摘要
本研究应用格心格式有限体积法求解欧拉方程,模拟绕旋翼浆叶的流动。旋翼尾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型式生成弦向和展向网格。通过算例计算为进一步寻求有效的Euler或NS方程数值解积累了经验。
A finite volume approach is applied to solve Euler equations for simulating the flowfiekl of a hovering rotor blade.Rotor wake effects are modeled in the form of a correction applied to the angle of attack along the blades.This correction is obtained by computing the local induced downwash with free wake analysis.O-H topology was chosen for the grid generation in chord-wise and spanwise directions.By means of the sample calculations the experience for exploring efficient numerical solutions of Euler/NS Equations are accumulated.
出处
《直升机技术》
1998年第2期24-29,共6页
Helicopter Technique
关键词
旋翼流场
欧拉方程
有限体积方法
龙格—库塔格式
Rotor flowfield Euler equations finite volume methods Runge-Kutta timestepping schemes
