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iDEA: Drexel E-repository and Archives > Drexel Academic Community > College of Engineering > Department of Civil, Architectural,and Environmental Engineering > Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405] > RANS simulations and LES of flow over dunes at low relative submergence ratios

Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1370

Title: RANS simulations and LES of flow over dunes at low relative submergence ratios
Authors: Stoesser, Thorsten
von Terzi, Dominic
Rodi, Wolfgang
Olsen, Nils R. B.
Keywords: Large eddy simulation;Turbulence modeling;Computational hydraulics
Issue Date: 11-Sep-2006
Publisher: Michael Piasecki and College of Engineering, Drexel University
Citation: Proceedings of the Seventh International Conference on Hydroscience and Engineering, Philadelphia, PA, September 2006. http://hdl.handle.net/1860/732
Abstract: This paper assesses the quality of two Reynolds-Averaged Navier-Stokes (RANS) turbulence models for predicting the flow over two-dimensional dunes: the standard K-w and the one-equation Spalart-Allmaras models. To this end a setup is chosen for which recent experimental mean flow data are available. Two different relative submergence ratios are considered: h/k=4 and h/k=5, where h is the water depth and k the dune height. The corresponding Reynolds numbers based on the mean bulk velocity and the water depth are Reh=36,000 and Reh=33,000, respectively. In addition, Large Eddy Simulations (LES) are performed to provide detailed reference data for the statistics of the turbulence. Comparisons of time-averaged velocities and streamlines, turbulent kinetic energy, and mean wall shear stresses along the dune bed are shown.
Description: Paper presented at The Seventh International Conference on HydroScience and Engineering (ICHE)hosted by the College of Engineering at Drexel Univeristy on September 10-13, 2006 in Philadelphia, Pennsylvania. The conference theme was IT in the Field of HydroSciences. It included several mini-symposia that emphasized IT topics in HydroSciences and the yearly meeting of the metadata group of the International Oceanographic Data and Information Exchange organization.
URI: http://hdl.handle.net/1860/1370
ISBN: 0977447405
Appears in Collections:Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405]

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