航天器高超声速气动力的数值计算

NUMERICAL PROCEDURE IN HYPERSONIC AERODYNAMIC ANALYSIS OF SPACECRAFT

本文把航天器的外形用数以百计的平面四边形元素来近似。利用高超声速绕流时面积元素之间的干扰可忽略的假设,分别计算出各面积元素的气动力,积分后得出航天器的气动力,算例的结果是令人满意的。本文也描述了航天器表面网格的生成技术和计算机绘制航天器在不同视角下外形图的原理。本文方法可供航天器初步气动设计时用。

In this paper, the complex configuration of hypersonic vehicle is replaced by hundreds of plane quadrilateral surface elements. The interferences among those elements are neglected because of the hypersonic. Integrating those aerodynamic forces obtained on each element gives the aerodynamic characteristics of hypersonic vehicle. Numerical examples show that the results are satisfied.The vehicle geometry generation and the technique of visual graphics by computer also outlined in this paper.The procedure described in this paper can be used to evaluate the aerodynamic characteristics in the preliminary aerodynamic design.