This study deals with the computational grid requirements in multiscale simulations of separated turbulent flows at high Reynolds number. The two-equation k-ε based DES (Detached Eddy Simulation) model is implemented in a full 3-D Navier-Stokes solver and numerical results are presented for transonic flow solution over an open cavity. Results for the vorticity, pressure fluctuations, SPL (Sound Pressure level) spectra and for modeled and resolved TKE (Turbulent Kinetic Energy) are presented and compared with available experimental data and with LES results. The results indicate that grid resolution significantly influences the resolved scales and the peak amplitude of the unsteady sound pressure level (SPL) and turbulent kinetic energy spectra.
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ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering
July 17–20, 2006
Miami, Florida, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4750-0
PROCEEDINGS PAPER
Grid Requirements for Multiscale Resolution in Separated Unsteady High Speed Turbulent Flows
D. Basu
University of Cincinnati, Cincinnati, OH
A. Hamed
University of Cincinnati, Cincinnati, OH
K. Das
University of Cincinnati, Cincinnati, OH
Paper No:
FEDSM2006-98570, pp. 1283-1292; 10 pages
Published Online:
September 5, 2008
Citation
Basu, D, Hamed, A, & Das, K. "Grid Requirements for Multiscale Resolution in Separated Unsteady High Speed Turbulent Flows." Proceedings of the ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. Volume 1: Symposia, Parts A and B. Miami, Florida, USA. July 17–20, 2006. pp. 1283-1292. ASME. https://doi.org/10.1115/FEDSM2006-98570
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