高马赫数钝头体气动/传热一体化计算方法研究

Research on the Integrated Calculation Method of Aerodynamics and Heat Transfer for Hypersonic Blunt Body

使用CFD方法计算了钝头体表面热流分布,与试验数据进行了对比,验证了方法的可靠性。分别使用迭代耦合和单向求解的方法计算了不同时刻结构内部的温度分布:迭代耦合方法通过单个时间步内流场和结构之间的互相数据交换,完成气动-传热一体化计算;单向求解通过CFD计算得到物体表面气动加热情况,再通过结构传热求得结构内部温度分布。计算结果表明:钝头体驻点位置受到气动加热效应最严重;迭代耦合计算方法相比于单向求解方法计算得到的结构温度更接近实际值。

The heat distribution on the surface of the blunt body is calculated using CFD method and compared with the experimental data to verify the reliability of the CFD methods.The temperature distribution inside the structure at different times is calculated using iterative coupled calculation and one-way solving methods respectively.The iterative coupled calculation completes the integrated calculation through the mutual data exchange between the flow field and the structure in single time iteration.The one-way solution obtains the aerodynamic heating of the surface through CFD method,and then obtains the internal temperature distribution through solving the Structure Heat Transfer Equation.The calculation results show that the stagnation point of the blunt body is the most seriously affected by the aerodynam⁃ic heating;the structural temperature calculated by iterative coupling calculation method is much closer to the experi⁃mental results than the one-way solution method.