Simulations of single and multiple swimmers with non-divergence free deforming geometries

Authors:
Mattia Gazzola;Philippe Chatelain;Wim M. van Rees;Petros Koumoutsakos
Affiliations:
Institute of Computational Science, ETH Zurich, CH-8092, Switzerland;Institute of Mechanics, Materials and Civil Engineering, Université catholique de Louvain, B-1348, Belgium;Institute of Computational Science, ETH Zurich, CH-8092, Switzerland;Institute of Computational Science, ETH Zurich, CH-8092, Switzerland
Venue:
Journal of Computational Physics
Year:
2011

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Abstract

We present a vortex particle method coupled with a penalization technique to simulate single and multiple swimmers in an incompressible, viscous flow in two and three dimensions. The proposed algorithm can handle arbitrarily deforming bodies and their corresponding non-divergence free deformation velocity fields. The method is validated on a number of benchmark problems with stationary and moving boundaries. Results include flows of tumbling objects and single and multiple self-propelled swimmers.