Numerical simulation of the water entry of an elastomer by using the WCSPH-SPIM coupled method
SHI Shuwen1,ZHANG Guiyong1,2,3,WANG Shuangqiang1,HU Taian1
1.Liaoning Engineering Laboratory for Deep-Sea Floating Structures, School of Naval Architecture, Dalian University of Technology, Dalian 116024, China;
2.State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China;
3.Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China
Abstract:Consider the strong nonlinear characteristic of water entry problem, the grid-based methods will inevitably encounter the problems such as grid distortion and inaccurate liquid surface capture. However, the Lagrangian meshless methods have shown strong advantage when dealing with this type of problem. Making use of this feature, a fluid-structure interaction (FSI) model has been built to simulate the water entry problem by using two meshless methods as fluid and solid solver, respectively. After verifying the weakly compressible smoothed particle hydrodynamics (WCSPH) method through the entry of a rigid body, the water entry problems of elastomer with low and high speeds have been studied using the newly proposed WCSPH and smooth point interpolation method (SPIM) coupled method (WCSPH-SPIM). The calculation results show that the deformation of key points and the change of pressure with time are in good agreement with those of experiment or semi analytical solution, which verifies the efficiency of the proposed method on the simulation of water entry.
施书文1,张桂勇1,2,3,王双强1,胡泰安1. 基于WCSPH-SPIM流固耦合模型的弹性体入水模拟[J]. 振动与冲击, 2020, 39(18): 103-108.
SHI Shuwen1,ZHANG Guiyong1,2,3,WANG Shuangqiang1,HU Taian1. Numerical simulation of the water entry of an elastomer by using the WCSPH-SPIM coupled method. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(18): 103-108.
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