Topical Problems of Fluid Mechanics


Institute of Thermomechanics AS CR, v.v.i.	CTU in Prague Faculty of Mech. Engineering Dept. Tech. Mathematics	MIO Université du Sud Toulon Var - AMU - CNRS - IRD	Czech Pilot centre ERCOFTAC

A 3D Unified Model to Fluid-Structure Interaction with Block-Based Adaptive Mesh Refinement
Altazin T., Golay F., Fraunié P.
Abstract:
We propose to bring a better understanding of the interaction between an air-water flow and a floating structure by means of a fast accurate numerical model. Following the 3D low Mach compressible Euler model developed in [14] and previous works from [20], [11] and [13], we are now interested in simulating the motion of a floating structure in an air-water flow. In the context of a fictitious domain, a volumic penalization is applied inside the body to ensure a rigidity constraint through a penalized velocity in order to get the correct motion of the rigid body. The tracking of the solid is insured by the reconstruction of a Heaviside function thanks to a ray-casting algorithm. The validity of our fluid-structure interaction (FSI) procedure is investigated through some examples.
Keywords:
Euler equations, low Mach, compressible, bi-fluid, mesh refinement, fluid-structure interaction, fictitious domain, penalization, projection method, ray-casting, interface-sharpening

Fulltext: PDF DOI: http://dx.doi.org/10.14311/TPFM.2016.001

In Proceedings Topical Problems of Fluid Mechanics 2016, Prague, 2016 Edited by David Šimurda and Tomáš Bodnár, pp. 1-8 ISBN 978-80-87012-58-1 (Print) ISSN 2336-5781 (Print)