T型尾翼民机深失速气动特性的计算研究  

Numerical Research on Aerodynamic Characteristic of T-tail Civil Transport in Deep Stalling

作　　者：王刚[1] 叶正寅[1] 许和勇[1] 李春娜[1] 

机构地区：[1]西北工业大学翼型叶栅空气动力学国防科技重点实验室,陕西西安710072

出　　处：《航空计算技术》2008年第1期19-22,共4页Aeronautical Computing Technique

摘　　要：以非结构混合网格上的雷诺平均N-S方程(RANS)求解方法为基础,对采用T型尾翼的某民机外形在大迎角深失速情况下的粘性绕流进行了数值模拟,获得了该机在巡航和降落外形在深失速情况下的气动特性变化规律。通过对T型尾翼深失速情况下的流动特点进行分析,解释了T型尾翼布局飞机在深失速情况下俯仰力矩系数会随迎角出现不利于纵向稳定性的变化趋势的原因。A numerical viscous simulation of a civil transport with T type tail is presented by solving RANS equations using mixed element unstructured grids, and the aerodynamic characteristics are obtained, supposing the transport is in deep stalling with cruising and landing configuration. For T tail configuration, the pitching moment coefficient will vary with attached angle, and the variation will take disadvantage to lengthways stability. By means of analyzing the air flow around the T tail in the deep stalling situation, we explain why the variation takes disadvantage to lengthways stability.

关 键 词：非结构混合网格 N—S方程 T型尾翼 深失速 

分 类 号：V211.41[航空宇航科学与技术—航空宇航推进理论与工程]