Title: A coupling algorithm with second-order accuracy for thermal fluid-structure interaction

Authors: P. Pironkov; D.C. Sternel; M. Schäfer

Addresses: FNB, Technische Universität Darmstadt, Dolivostrasse 15, 64293 Darmstadt, Germany ' FNB, Technische Universität Darmstadt, Dolivostrasse 15, 64293 Darmstadt, Germany ' FNB, Technische Universität Darmstadt, Dolivostrasse 15, 64293 Darmstadt, Germany

Abstract: A second-order accurate coupling algorithm for Thermal Fluid-Structure Interaction (TFSI) is presented. An implicit partitioned solution approach, which combines the advantages of weakly and strongly coupled schemes, is used. The framework consists of a finite-volume solver in arbitrary-Lagrangian-Eulerian formulation for the flow simulation, a finite-element code for the structural part and a commercial, black-box coupling interface. The thermal coupling is realised by a Schwarz decomposition method. Several elementary configurations are considered, to test the accuracy and to investigate the numerical characteristics of the system. By applying different grid configurations, we show that the results are of second-order accuracy. We also discuss the convergence properties of the method.

Keywords: thermal fluid-structure interaction; ALE; arbitrary Lagrangian-Eulerian; Schwarz decomposition; implicit partitioned solver; CFD; computational fluid dynamics; flow simulation; finite element method; FEM; thermal coupling; grid configurations; second-order accuracy; convergence.

DOI: 10.1504/PCFD.2013.052423

Progress in Computational Fluid Dynamics, An International Journal, 2013 Vol.13 No.2, pp.84 - 93

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 19 Feb 2013 *

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