摘要
栅格长宽比是影响栅格翼气动特性的重要参数,为研究它对栅格翼气动特性的影响规律,本文通过求解NS方程数值模拟研究单栅格长宽比对栅格气动特性的影响,并且对栅格边框厚度和形状对阻力的影响,在亚、跨、超声速多个马赫数下进行了数值模拟。结果显示,在所选择的长宽比范围内,长宽比对阻力的影响不大,对法向力有明显的影响,选择适当的栅格边框外形和厚度,可以大大减小栅格的阻力。
This paper presents the results of a study to demonstrate an approach for using viscous computational fluid dynamic coefficients for grid fins. Seven different frame cross-section were modeled to research the effects of outer frame cross-section shape and web thickness. The results obtained indicate that frame cross-section shape and web thickness have a significant effect on grid fin drag characteristics at all mach numbers. From the results presented in this paper, the observation is made that grid fins drag level can be tailored considerably.
出处
《空气动力学学报》
EI
CSCD
北大核心
2009年第1期78-82,共5页
Acta Aerodynamica Sinica
关键词
栅格翼
长宽比
激波反射
grid fin＇ high to length ratio
shock wave reflect
