2.Computational Mechanics

[12007-12-06] Implicit Eulerian fluid-structure interaction method using Reference map technique (Proceedings of Symposium on Applied Mechanics)

*Keito Kondo¹, Koji Nishiguchi¹, Hiroya Hoshiba¹, Junji Kato¹ (1. Nagoya University Graduate School of Engineering)

Keywords:computational mechanics, coupled problem, fluid, solid, semi-implicit, Eulerian computing method

The Eulerian fluid-structure interaction method is a numerical method suitable for massively parallel computation of solid-fluid coupled problems. However, the existing method causes numerical instability when the velocity difference between the solid and fluid is large. On the other hand, the Reference map technique avoids numerical instability due to the velocity difference. However, since the explicit method is used in the formulation of previous studies, the computation time becomes more limited as the elastic modulus of the solid increases. In this study, we propose an Eulerian fluid-structure interaction method using the semi-implicit method and the Reference map technique.