Towards development of a reliable fully-Lagrangian MPS-based FSI solver for simulation of 2D hydroelastic slamming
Towards development of a reliable fully-Lagrangian MPS-based FSI solver for simulation of 2D hydroelastic slamming
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发表时间：
2017
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通讯作者：
Abbas Khayyer;H. Gotoh;Hosein Falahaty;Y. Shimizu;Y. Nishijima
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作者：
Abbas Khayyer;H. Gotoh;Hosein Falahaty;Y. Shimizu;Y. Nishijima
本文旨在说明几个关键问题和正在进行的工作，以开发一个可靠的完全拉格朗日粒子为基础的水弹性砰击模拟求解器。流体模型通过一种改进的基于投影的质点方法，即移动粒子半隐式(MPS)方法，建立在求解Navier-Stokes方程和连续性方程的基础上。根据弹性固体的线动量守恒和角动量守恒，流体模型与结构模型小心地耦合在一起。将所开发的FSI(流固耦合)求解器应用于船体壁板的弹性铝楔高速撞击和水弹性撞击的数值模拟。从复制压力和结构变形两方面进行了定性和定量的验证。报告强调了几个剩余的挑战和重要的关键问题。最后，为了增强FSI求解器的自适应性，将新发展的多尺度MPS方法引入到FSI求解器中。
The paper aims at illustrating several key issues and ongoing efforts for development of a reliable fully-Lagrangian particle-based solver for simulation of hydroelastic slamming. Fluid model is founded on the solution of Navier-Stokes along with continuity equations via an enhanced version of a projection-based particle method, namely, Moving Particle Semi-implicit (MPS) method. The fluid model is carefully coupled with a structure model on the basis of conservation of linear and angular momenta for an elastic solid. The developed coupled FSI (Fluid-Structure Interaction) solver is applied to simulations of high velocity impact of an elastic aluminum wedge and hydroelastic slammings of marine panels. Validations are made both qualitatively and quantitatively in terms of reproduced pressure as well as structure deformation. Several remaining challenges as well as important key issues are highlighted. At last, a recently developed multi-scale MPS method is incorporated in the developed FSI solver towards enhancement of its adaptivity.