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Large-eddy simulation of turbulent dynamic fluid-structure interaction

DOI: 10.1615/ICHMT.2012.ProcSevIntSympTurbHeatTransfPal.1520
pages 1476-1487

O. Estruch
Heat and Mass Transfer Technological Center, Polytechnical University of Catalonia (UPC), Colom 11, 08222, Terrassa (Barcelona), Spain

O. Lehmkuhl
Heat and Mass Transfer Technological Center, Polytechnical University of Catalonia (UPC) Colom11, 08222, Terrassa, Barcelona, Spain; Termo Fluids, S.L., Magi Colet, 8, 08204 Sabadell (Barcelona), Spain

R. Borrell
Heat and Mass Transfer Technological Center (CTTC), Universitat Politecnica de Catalunya, Colom 11 08222 Terrassa, Spain; TermoFluids S.L, Av. Jacquard 97 08222, Barcelona, Spain

C. D. Perez-Segarra
Heat and Mass Transfer Technological Center (CTTC) Universitat Politecnica de Catalunya - BarcelonaTech (UPC) Colom 11, 08222 Terrassa, Barcelona, Spain

Sinopsis

We present a partitioned FSI solution algorithm focusing on the fluid solver and, in particular, on the CFD aspects and the dynamic mesh method. Hence, we introduce a radial basis function interpolation method as a procedure to dynamically adapt the mesh according with the movement of the structure. This moving mesh technique is coupled, by means of the space conservation law, with a CFD solver, which is based on a second-order, conservative and unstructured finite volume discretization. Large-eddy simulation is performed to solve the turbulent flow, using the subgrid scale WALE model. Illustrative results are shown on a FSI test case consisting of a shell subjected to a moderate Reynolds cross-flow. As a first attempt, the CSD solver formulates the shell as a cantilever beam with a uniformly distributed load. The mesh used is structured of 169.920 control volumes. Despite using a coarse mesh and a simple CSD solver, the coherent structures of the turbulent phenomena are well captured.

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