基于RANS方法的民用飞机网格分析

Mesh Analysis of Civil Aircraft Based on RANS Equations

基于RANS方程分别对代表民机巡航的DLR-F6模型和增升的NASA TRAPWING模型进行多块结构化网格生成技术研究,通过网格拓扑、分布、质量参数等多项研究,得到影响民机外流场粘性计算需要的网格生成因子,形成一套适用高精度阻力预测的民机CFD网格生成指南。同时,为验证网格设计方法的可靠性及准确性,分析了不同网格生成准则对于CFD计算模拟精准度的影响,为民机计算策略研究及气动力设计提供了参考依据,具有重要的工程实用价值。

Based on RANS equations, generation technique of multi- block structured grid is studied for representative configurations of civil airplane ： DLR- F6 cruise model and NASA trapezoidal wing high- lift model. Grid generation factor which influences viscous computation of civil- plane outside flow- field is obtained by muhinomial study such as grid topology, grid distribution, quality parameters. CFD grid gener- ation guideline of civil airplane is formed for high credible drag prediction.