Title: Benchmark simulations of flow past rigid bodies using an open-source, sharp interface immersed boundary method

Authors: Utku Senturk; Daniel Brunner; Hrvoje Jasak; Nicoleta Herzog; Clarence W. Rowley; Alexander J. Smits

Addresses: Department of Mechanical Engineering, Ege University, Izmir 35040, Turkey ' ZHAW Zurich University of Applied Sciences, Winterthur 8401, Switzerland ' Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, Zagreb 10000, Croatia ' ZHAW Zurich University of Applied Sciences, Winterthur 8401, Switzerland ' Department of Mechanical and Aerospace Engineering, Princeton University, Princeton 08544, USA ' Department of Mechanical and Aerospace Engineering, Princeton University, Princeton 08544, USA; Department of Mechanical and Aerospace Engineering, Monash University, Victoria 3800, Australia

Abstract: This study reports benchmark results for a new immersed boundary method based finite-volume solver within the framework of the open-source toolbox foam-extend 3.2. The immersed boundary formulation uses a discrete forcing approach based on a weighted least squares approximation that preserves the sharpness of the boundary. Five test cases with increasing complexity are used. Results are also presented for the flow past a low-aspect-ratio plate that pitches about its leading edge at a Reynolds number of 2000. Force coefficient results are compared with available experimental and computational data. The results show that foam-extend 3.2 appears to be a promising open-source tool for solving flows with steady and unsteady immersed boundaries.

Keywords: computational fluid dynamics; open source; OpenFOAM; immersed boundary method; discrete.

DOI: 10.1504/PCFD.2019.100870

Progress in Computational Fluid Dynamics, An International Journal, 2019 Vol.19 No.4, pp.205 - 219

Received: 25 Nov 2016
Accepted: 04 Oct 2017
Published online: 19 Jul 2019 *

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