An Eulerian–Lagrangian method for fluid–structure interaction based on level sets

We describe a method for fluid–structure interaction with the interface and free surfaces defined by level sets. The fluid is treated by an Eulerian mesh whereas the solid or structure by a Lagrangian mesh. The level set method provides a compact framework for writing the weak form and for developin...

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Bibliographic Details
Published in:Computer methods in applied mechanics and engineering 2006-03, Vol.195 (17), p.2070-2087
Main Authors: Legay, A., Chessa, J., Belytschko, T.
Format: Article
Language:English
Subjects:
Compressible fluid
Engineering Sciences
Euler fluid
Fluid–structure interaction
Lagrange structure
Level set
Mechanics
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Summary:We describe a method for fluid–structure interaction with the interface and free surfaces defined by level sets. The fluid is treated by an Eulerian mesh whereas the solid or structure by a Lagrangian mesh. The level set method provides a compact framework for writing the weak form and for developing and computing the discretized equations. Lagrange multiplier methods and penalty methods are used to couple the fluid and structure. Results are presented for a few compressible fluid problems representative of high pressure waves.
ISSN:0045-7825
1879-2138
DOI:10.1016/j.cma.2005.02.025