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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] > Numerical investigation on a rough bed turbulent boundary layer under cnoidal wave motion

Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/1376

Title: Numerical investigation on a rough bed turbulent boundary layer under cnoidal wave motion
Authors: Tanaka, Hitoshi
Sana, Suntoyo
Sana, Ahmad
Keywords: 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: Non-linearity in wave motion is one of the factors causing net sediment transport under oscillatory waves. Thus, there is a high necessity to incorporate wave non-linearity in an estimation of bottom shear stress. In the present paper, turbulent boundary layer characteristics for asymmetric waves according to the non-linearity effect is examined through both experimental and the baseline (BSL) k-ω turbulence model. Moreover, a new calculation method of bottom shear stress based on incorporating acceleration and velocity terms is used to examine both the experimental and the BSL k-ω turbulence model results. Experiments of turbulent boundary layer flow for cnoidal waves were conducted in an oscillating wind tunnel over rough bed. Laser Doppler Velocimeter (LDV) was used to measure flow velocity distribution for three cases with different non-linearity index, Ni, namely Ni=0.67, 0.60 and 0.58.
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/1860/1376
ISBN: 0977447405
Appears in Collections:Proceedings of the 7th International Conference on HydroScience and Engineering (ICHE 2006) [ISBN: 0977447405]

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