Abstr:UFR 2-14: Difference between revisions
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= Abstract = | = Abstract = | ||
* You are looking for an interesting test case for fluid-structure interaction in turbulent flow? | |||
* You already had a look at the test case ? and think that this case is not challenging enough? | |||
The investigation of the bidirectional coupling between a fluid flow | The investigation of the bidirectional coupling between a fluid flow | ||
Revision as of 08:29, 3 May 2014
Fluid-structure interaction in turbulent flow past cylinder/plate configuration II
Flows Around Bodies
Underlying Flow Regime 2-14
Abstract
- You are looking for an interesting test case for fluid-structure interaction in turbulent flow?
- You already had a look at the test case ? and think that this case is not challenging enough?
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 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.
Contributed by: Andreas Kalmbach, Guillaume De Nayer, Michael Breuer — Helmut-Schmidt Universität Hamburg
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