Uffinger T, Schäfer F, Becker S, Grabinger J, Kaltenbacher M (2009)
Publication Language: English
Publication Type: Book chapter / Article in edited volumes
Publication year: 2009
Publisher: Kassel University Press
Edited Volumes: International Workshop on Fluid-Structure Interaction - Theory, Numerics and Applications
Pages Range: 253-264
ISBN: 978-3-89958-666-4
A coupled simulation approach for fluid-structure-acoustic interactions is presented, which considers both the flow-induced 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 in-house finite-volume code solving the incompressible Navier- Stokes equations in space and time. For the structural mechanics computations, an in-house finite-element 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 sub-iterations in each time step is employed for fluid-structure interaction. The computation of the aeroacoustic sound is based on Lighthill’s theory. The structural-acoustic coupling is realized by applying appropriate boundary conditions to the acoustic wave equation. The above-described 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.
APA:
Uffinger, T., Schäfer, F., Becker, S., Grabinger, J., & Kaltenbacher, M. (2009). Fluid-Structure-Acoustic 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 Fluid-Structure Interaction - Theory, Numerics and Applications. (pp. 253-264). Kassel University Press.
MLA:
Uffinger, Thomas, et al. "Fluid-Structure-Acoustic Interaction of a Thin, Flexible Plate in the Wake of a Wall Mounted Square Cylinder." International Workshop on Fluid-Structure Interaction - Theory, Numerics and Applications. Ed. Meister A, Hartmann S, Schäfer M, Turek S, Kassel University Press, 2009. 253-264.
BibTeX: Download