An Implicit Scheme for Moving Walls and Multi-Material Interfaces in Weakly Compressible Materials  

作　　者：Emanuela Abbate Angelo Iollo Gabriella Puppo 

机构地区：[1]Universit`a degli Studi dell’Insubria,via Valleggio,Como 22100,Italy [2]Universit́e Bordeaux,IMB,UMR 5251,F-33400 Talence,France [3]Equipe-projet Memphis,Inria Bordeaux-Sud Ouest,F-33400 Talence,France [4]La Sapienza Universit`a di Roma,Piazzale Aldo Moro,00185 Roma,Italy

出　　处：《Communications in Computational Physics》2020年第1期116-144,共29页计算物理通讯（英文）

摘　　要：We propose a numerical method for the simulation of flows from weakly compressible to low Mach regimes in domains with moving boundaries.Non-miscible weakly compressible materials separated by an interface are included as well.The scheme is fully implicit and it exploits the relaxation all-speed scheme introduced in[1].We consider media with significantly different physical properties and constitutive laws,as fluids and hyperelastic solids.The proposed numerical scheme is fully Eulerian and it is the same for all materials.We present numerical validations by simulating weakly compressible fluid/fluid,solid/solid and solid/fluid interactions.

关 键 词：Multi-material interfaces moving boundaries low Mach regime Eulerian elasticity 

分 类 号：O17[理学—数学]