钝头双锥体有攻角表面热流计算

PREDICTED HEATING DISTRIBUTIONS FOR BLUNT BICONIC AT AN ANGLE OF ATTACK

本文针对导弹机动弹头再入的防热问题 ,通过求解二维EULER方程确定边界层外缘参数 ,在理论与半经验公式的基础上 ,利用参考焓方法计算了球头钝双锥外形弹头有攻角再入时的表面热流。通过与国外实验结果比较表明 ,这种采用CFD方法求解边界层外缘参数和其它方法获得的热流计算结果较为准确 。

An effective method for calculating the heating rates on warheads of blunt biconic was developed. The method is based on reference enthalpy theory and semi empirical formulas. The boundary layer edge conditions are determined by the CFD method solved by Euler equations of two dimensions. Results of the method are in good agreement with existing experimental results.