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

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

Year:    2020

Author:    Emanuela Abbate, Angelo Iollo, Gabriella Puppo

Communications in Computational Physics, Vol. 27 (2020), Iss. 1 : pp. 116–144

Abstract

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.

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Journal Article Details

Publisher Name:    Global Science Press

Language:    English

DOI:    https://doi.org/10.4208/cicp.OA-2018-0188

Communications in Computational Physics, Vol. 27 (2020), Iss. 1 : pp. 116–144

Published online:    2020-01

AMS Subject Headings:    Global Science Press

Copyright:    COPYRIGHT: © Global Science Press

Pages:    29

Keywords:    Multi-material interfaces moving boundaries low Mach regime Eulerian elasticity.

Author Details

Emanuela Abbate

Angelo Iollo

Gabriella Puppo