空气动力学学报2025，Vol.43Issue(6)：28-34,7.DOI:10.7638/kqdlxxb-2024.0196
高速二维喷管主动冷却数值模拟
Numerical simulations of active cooling for a two-dimensional high-speed nozzle
摘要
Abstract
To meet the thermal protection requirements of high-speed and high-temperature two-dimensional nozzles in ground test facilities,a numerical study was conducted to evaluate the active cooling performance under different operating conditions.Rectangular cooling channels,perpendicular to the airflow direction,were designed within the wall panels to investigate the effects of different cooling configurations on wall temperature distribution,wall heat flux distribution,and exit Mach number distribution.The results indicated that localized cooling significantly reduced the maximum throat temperature from 469.1 K under adiabatic conditions to 372.5 K,effectively decreasing the wall temperature in the throat region and improving temperature uniformity.While global cooling enhanced the uniformity of wall temperature distribution and reduced thermal stress within the wall panels,it adversely affected the downstream temperature and velocity boundary layer thickness,leading to a deterioration of Mach number uniformity in the core flow region and a degradation of flow field quality.关键词
高速喷管/主动冷却/二维喷管/数值模拟/传热传质Key words
high-speed nozzle/active cooling/2D nozzle/numerical simulation/heat and mass transfer分类
能源科技引用本文复制引用
徐大川,顾蕴松,陈景祥..高速二维喷管主动冷却数值模拟[J].空气动力学学报,2025,43(6):28-34,7.基金项目
国家自然科学基金(52106215) （52106215）
