高超声速飞行器流热固耦合实时仿真技术

The solution of the coupling characteristics of fluid-thermo-solid physics in the modeling of hypersonic vehicle is an unavoidable difficulty, and the real-time simulation of fluid-thermo-solid coupling is particularly challenging. Aiming at the conflicting problem of solution accuracy and solution efficiency in fluid-thermo-solid coupling real-time simulation, a CFD (Computational Fluid Dynamics)/ CSD (Computational Structural Dynamics)-based fluid-thermo-solid coupling characteristic solution method is established, which realizes the high-precision solution of the fluid, temperature, and structural deformation field coupling. According to the multi-condition offline solution set modeling method, by accumulating a large number of offline solutions as effective support for online calculation, the contradiction between solution accuracy and solution efficiency is balanced. A virtual flight test is carried out to analyze the influence of the coupling effect on the angle of attack and net thrust of the aircraft, and compared with NASA experimental data to verify the correctness of the model.