|Title:||Experimental PIV/V3V measurements of vortex-induced fluid-structure interaction in turbulent flow-A new benchmark FSI-PfS-2a||Authors:||Kalmbach, Andreas
|Language:||eng||Issue Date:||Oct-2013||Publisher:||Academic Press||Document Type:||Article||Source:||In: Journal of fluids and structures. - London : Acad. Press, 1987- ; ZDB-ID: 56997-5 . - Bd. 42.2013, 1, Seite 369-387||Journal / Series / Working Paper (HSU):||Journal of Fluids and Structures||Volume:||42||Issue:||1||Page Start:||369||Page End:||387||Publisher Place:||London||Abstract:||
The investigation of the bidirectional coupling between a fluid flow and a structure motion is a growing branch of research in science and industry. Applications of the so-called fluid-structure interactions (FSI) are widespread. To improve coupled numerical FSI simulations, generic experimental benchmark studies of the fluid and the structure are necessary. In this work, the coupling of a vortex-induced periodic deformation of a flexible structure mounted behind a rigid cylinder and a fully turbulent water flow performed at a Reynolds number of Re=30. 470 is experimentally investigated with a planar particle image velocimetry (PIV) and a volumetric three-component velocimetry (V3V) system. To determine the structure displacements a multiple-point laser triangulation sensor is used. The three-dimensional fluid velocity results show shedding vortices behind the structure, which reaches the second swiveling mode with a frequency of about 11.2. Hz corresponding to a Strouhal number of St=0.177. Providing phase-averaged flow and structure measurements precise experimental data for coupled computational fluid dynamics (CFD) and computational structure dynamics (CSD) validations are available for this new benchmark case denoted FSI-PfS-2a. The test case possesses four main advantages: (i) the geometry is rather simple; (ii) kinematically, the rotation of the front cylinder is avoided; (iii) the boundary conditions are well defined; (iv) nevertheless, the resulting flow features and structure displacements are challenging from the computational point of view. In addition to the flow field and displacement data a PIV-based force calculation method is used to estimate the lift and drag coefficients of the moving structure. © 2013 Elsevier Ltd.
|Organization Units (connected with the publication):||Strömungsmechanik||ISSN:||08899746||Publisher DOI:||10.1016/j.jfluidstructs.2013.07.004|
|Appears in Collections:||3 - Reported Publications|
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