Wave boundary layers in rough turbulent flow |
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| Authors: | Tai-Wen Hsu Shan-Hwei Ou |
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| Institution: | Department of Hydraulics and Ocean Engineering, National Cheng Kung University, Tainan Taiwan 70101, R.O.C. |
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| Abstract: | A one-layer time-invariant eddy viscosity model is specified to develop a mathematical model for describing the essential features of the turbulent wave boundary layer over a rough bed. The functional form of the eddy viscosity is evaluated based on a modified one-equation turbulence model in which the eddy viscosity varies in time and space. The present eddy viscosity model simplifies much of the mathematical complexity in many existing models. Predictions from the present model have been compared favorably with a wide range of experimental data. It is found that the eddy viscosity model adopted in the present study is physically reasonable. |
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