基于数据库的三维复杂外形飞行器表面热流快速计算方法

A Calculating Method of Surface Heat Flow of Three-dimensiona Complex Shape Vehicle Based on DELMIA

高超声速复杂外形飞行器气动热环境预计是飞行器设计中的难点问题。发展一种基于数据库、使用数值与工程结合的表面热流快速计算方法,以X-33类飞行器为例,给出气动热数据库的构建方法及基于数据库的快速算法。通过算例比较,验证了方法的计算精度。该方法有效弥补了三维复杂外形飞行器气动热环境数值计算耗时长、工程算法计算精度不足的问题,能够满足高超声速飞行器再入时气动热环境实时预测和新型飞行器开发设计阶段优化设计的需求。

It is a difficult problem in hypersonic vehicle designing to predict the aerodynamic heating of the three-dimensional complex shape vehicle. A calculating method combining the engineering and numerical values has been developed in this paper. With the X-33 vehicle as the study object, an establishing method of the aeroheating database and a calculating method based on the database are provided. The fast method is verified by the comparison with CFD and engineering results. This method effectively solves the time-consuming and inaccurate problem of aerodynamic environment numerical calculation. Using this method, the requirements of real-time prediction of aeroheating during hypersonic vehicle reentry and the optimal design requirements during development phase of new aircraft design can be met.