FluidStructureAcoustic Interaction of a Thin, Flexible Plate in the Wake of a Wall Mounted Square Cylinder
Article in Edited Volumes
Publication Details
Author(s): Uffinger T, Schäfer F, Becker S, Grabinger J, Kaltenbacher M
Editor(s): Meister A, Hartmann S, Schäfer M, Turek S
Title edited volumes: International Workshop on FluidStructure Interaction  Theory, Numerics and Applications
Publisher: Kassel University Press
Publication year: 2009
Pages range: 253264
ISBN: 9783899586664
Language: English
Abstract
A coupled simulation approach for ﬂuidstructureacoustic interactions is presented, which considers both the ﬂowinduced sound and the sound due to structural vibrations. The proposed computation scheme is based on a partitioned approach that uses different simulation codes for the ﬂow simulation and the structural and acoustic computations. The ﬂow simulation is done by an inhouse ﬁnitevolume code solving the incompressible Navier Stokes equations in space and time. For the structural mechanics computations, an inhouse ﬁniteelement multi physics code is applied, which is also able to solve the acoustic wave equation describing the wave propagation to the far ﬁeld. An implicit coupling scheme with subiterations in each time step is employed for ﬂuidstructure interaction. The computation of the aeroacoustic sound is based on Lighthill’s theory. The structuralacoustic coupling is realized by applying appropriate boundary conditions to the acoustic wave equation. The abovedescribed methodology is applied to a simpliﬁed model of a car underbody. The acoustic ﬁeld due to the interaction of a thin, ﬂexible plate representing coverings of the car underbody and a turbulent ﬂow is investigated. The ﬂexible plate is part of an otherwise rigid wall that is overﬂown by air. To model obstacles typically found at real car underbodies, a square cylinder is placed upstream of the ﬂexible plate. The Reynolds number of the ﬂow based on the free stream veloctiy and the obstacle height is 26 000.
FAU Authors / FAU Editors
   Lehrstuhl für Prozessmaschinen und Anlagentechnik 

   
 Kaltenbacher, Manfred PD Dr. 
  
   Lehrstuhl für Prozessmaschinen und Anlagentechnik 

How to cite
APA:  Uffinger, T., Schäfer, F., Becker, S., Grabinger, J., & Kaltenbacher, M. (2009). FluidStructureAcoustic Interaction of a Thin, Flexible Plate in the Wake of a Wall Mounted Square Cylinder. In Meister A, Hartmann S, Schäfer M, Turek S (Eds.), International Workshop on FluidStructure Interaction  Theory, Numerics and Applications (pp. 253264). Kassel University Press. 
MLA:  Uffinger, Thomas, et al. "FluidStructureAcoustic Interaction of a Thin, Flexible Plate in the Wake of a Wall Mounted Square Cylinder." International Workshop on FluidStructure Interaction  Theory, Numerics and Applications Ed. Meister A, Hartmann S, Schäfer M, Turek S, Kassel University Press, 2009. 253264. 