基于多面体重叠网格的多体分离计算分析

Numerical Research on Store Separation Based on Polyhedral Overset Mesh

分离问题在航空航天领域频繁出现,对各类运载火箭、飞行器等完成任务使命至关重要,并事关主体/分离体的安全。基于带边界层加密的多面体网格、重叠网格和刚体六自由度运动方程,利用CFD数值模拟方法,对某标模外形开展了多体分离数值模拟,研究了不同初始弹射力对多体分离安全性的影响,从纵向和横航向两方面分析了标模的分离特性及与弹射力的关系,对工程研究有一定的参考作用。

Store separation is one of the essential issues for weapons in warfare missions,and matters to the carrier safety.In this paper,based on the CFD methods including polyhedral hybrid mesh,overset mesh and 6-DOF equations of rigid body motion,the simulation of store separation of a calibration model was carried out.The effect of initial ejection forces on the separation safety was studied,and the separation characteristics in both the longitudinal and lateral motions were analyzed,which can be used as a reference for engineering applications.