摘要
基于滑移网格技术,通过采用准定常N-S方法,分析研究螺旋桨滑流对全机气动特性的干扰影响。以某带四台螺旋桨发动机的巡航构型为例,对比研究滑移交界面的影响,确立准确的滑移交界面建立方式,进而重点对某带后缘襟翼的螺旋桨飞机的流场特性进行计算分析,研究螺旋桨滑流对全机流场和气动性能的影响。数值计算表明:提出的用于研究螺旋桨滑流影响效应的滑移网格方法,是螺旋桨飞机设计评估的一种有效数值模拟手段,可简化动静网格的数据交换,具有一定的工程实用价值。
The article study the effect of propeller slipstream on the aerodynamic characteristics with the quasi- steady method,which based on the sliding mesh technology. In this paper, the flow field around a four engine turbo- prop wing body configuration is simulated firstly. Through the contrastive study of the influence of sliding interface, the accurate setup method of sliding interface is established. Then the three dimensional flow field around a two engine turbo- prop wing body configuration is simulated especially. The effects of propeller slipstream on the characteristics of the flow field and aerodynamic are analyzed. The results show that the change of the pressure distributions on wing surface and the increment of lift and drag coefficients caused by the propeller slipstream. This study provides a valid numerical simulation method for propeller- driven aircraft design and possesses higher utility value in engineering.
出处
《航空计算技术》
2013年第6期42-45,共4页
Aeronautical Computing Technique
基金
国家863计划项目资助(2012AA01A304)
关键词
螺旋桨滑流
滑移网格技术
准定常方法
propeller slipstream
sliding mesh technology
quasi- steady method
