关键词: ALE有限元, 并行计算, 碰撞冲击, 区域分解, 双层储液容器

Abstract: The ALE description is adopted for the fluid domain, while the Lagrangian formulation is considered for the structural domain. The computation of fluid-structure interaction is realized by the penalty function-based coupling method. The dynamic behaviors of the dual layer liquid-filled container in the crash is analyzed, in the meantime, the parallelism of the dual layer container is discussed because the computation of fluid-structure interaction and the impact contact is quite time-consuming. Based on domain de-composition, the recursive coordinate bisection (RCB) is improved according to the time-consuming characteristics of dual layer liquid-filled container in the impact with the ground. The result indicates, in comparison with RCB algorithm, the improved recursive coordinate bisection (IRCB) algorithm has improved speedup and parallel efficiency.

Key words: ALE method, Domain decomposition, Dual layer liquid-filled container, Impact, Parallel computing