title: An immersed-shell method for modelling fluid-structure interactions.
abstract: The paper presents a novel method for numerically modelling fluid-structure interactions. The method consists of solving the fluid-dynamics equations on an extended domain, where the computational mesh covers both fluid and solid structures. The fluid and solid velocities are relaxed to one another through a penalty force. The latter acts on a thin shell surrounding the solid structures. Additionally, the shell is represented on the extended domain by a non-zero shell-concentration field, which is obtained by conservatively mapping the shell mesh onto the extended mesh. The paper outlines the theory underpinning this novel method, referred to as the immersed-shell approach. It also shows how the coupling between a fluid- and a structural-dynamics solver is achieved. At this stage, results are shown for cases of fundamental interest.
authors.affiliation: Wind Energy Group, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2629 HS Delft, The Netherlands a.c.vire@tudelft.nl.
authors.forename: A
authors.identifier: http://orcid.org/0000-0003-0056-8213
authors.initials: A
authors.lastname: Viré
authors.affiliation: Applied Modelling and Computation Group, Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK.
authors.forename: J
authors.initials: J
authors.lastname: Xiang
authors.affiliation: Applied Modelling and Computation Group, Department of Earth Science and Engineering, Imperial College London, London SW7 2AZ, UK.
authors.forename: C C
authors.initials: CC
authors.lastname: Pain
keywords: aerodynamics; fluid–structure interactions; immersed-body approach