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为研究弹性体在稠密大气中的分离问题,基于非结构网格,采用运动网格与局部网格重构相结合的方法求解大位移相对运动的流场,并耦合6自由度刚体运动方程得到整流罩的运动.非定常流动方程使用格心有限体积法进行空间离散,并运用LU-SGS进行求解.应用标准算例验证该方法的准确性,并用于某整流罩飞行轨迹的计算.结果表明结构变形可能会使整流罩与飞行器碰撞.
In order to study the separation of elastomers in the dense atmosphere, based on the unstructured grids, a combination of moving grids and local grids reconstruction method is used to solve the flow field of large displacement relative motion. Coupled with the 6-DOF rigid-body equation of motion Fairing motion.The unsteady flow equation is discretized by the lattice-centered finite volume method and solved by LU-SGS.The accuracy of this method is verified by a standard example and used to calculate the flight path of a fairing.The results show that Structural deformation may cause the fairing to collide with the aircraft.