实验流体力学2025，Vol.39Issue(3)：23-31,9.DOI:10.11729/syltlx20250046
来流温度对气动热的影响及关联方法初步研究
Preliminary study on the influence of freestream temperature on aeroheating and correlation method
赵金山 1张志刚 1石义雷 1李维东 1肖雨 1陈挺 1粟斯尧 1王勇 1廖军好1
作者信息
- 1. 中国空气动力研究与发展中心 超高速空气动力研究所,绵阳 621000||飞行器流体物理全国重点实验室,绵阳 621000
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摘要
Abstract
The temperature gradient at the bottom of the boundary layer is a significant factor causing aeroheating,and both the near-wall recovery temperature and wall temperature directly influence the temperature distribution at the bottom of the boundary layer.To enhance the extrapolation accuracy of aeroheating predictions from ground wind tunnel tests under low total temperature conditions to real-flight high total temperature environments,the primary influencing parameters for aeroheating in both laminar and turbulent flow regimes are derived based on dimensionless Navier-Stokes equations.Subsequently,for a standard hypersonic vehicle configuration,numerical simulations are carried out under identical Mach number and Reynolds number by separately fixing wall temperature and wall-to-freestream temperature ratio.The influence of freestream temperature on aeroheating coefficient is compared and analyzed.Finally,based on the boundary layer approximate solution theory,aeroheating correlation and conversion methods accounting for the influence of local boundary layer outer edge parameters are developed separately for laminar and turbulent flow regimes.At different temperatures,the aeroheating results computed under the calorically perfect gas assumption are respectively correlated and converted.关键词
气动热环境/来流温度/无量纲/关联换算Key words
aeroheating environment/freestream temperature/dimensionless/correlation conversion分类
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赵金山,张志刚,石义雷,李维东,肖雨,陈挺,粟斯尧,王勇,廖军好..来流温度对气动热的影响及关联方法初步研究[J].实验流体力学,2025,39(3):23-31,9.
