类前缘局部热防护的场协同问题初步分析

THE ANALYSIS ON THE COORDINATION OF VELOCITY AND TEMPERATURE FIELDS IN THE LOCAL THERMAL PROTECTION OF LEADING EDGE

本文针对二维类前缘外形在带表面吹气情况下的高超声速流场进行了数值模拟,结果表明表面吹气能起到局部防热作用。本文应用场协同的概念,分析了流场中速度场与温度场的关系,从机理上进一步认识有关冷却的原理。

The hypersonic flow in the region of 2-dimensional leading edge of reentry vehicle with local blowing is numerically simulated in this paper. It shows that the local aerodynamic heating on the region near the local blowing of the leading edge is decreased as compared with the heating on the surface without local blowing. To recognize the mechanism of the decreasing of local aerodynamic heating with local blowing in another point of view, the coordination of velocity and temperature fields is analyzed in this paper, which will be a reference for the design of local thermal protection.