Simulation of wave propagation over a submerged bar using the VOF method with a two-equation k– turbulence modeling |
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| Authors: | Y M Shen C O Ng Y H Zheng |
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| Institution: | a State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, PR China;b Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China;c Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510070, PR China |
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| Abstract: | A two-equation k– turbulence model is used in this paper to simulate the propagation of cnoidal waves over a submerged bar, where the free surface is handled by the volume-of-fluid (VOF) method. Using a VOF partial-cell variable and a donor–acceptor method, the model is capable of treating irregular boundaries, including arbitrary bottom topography and internal obstacles, where the no-slip condition is satisfied. The model also allows the viscous sublayer to be modeled by a wall function approximation implemented in the grid nodes that are immediately adjacent to a wall boundary. The numerical model applied to the propagation of cnoidal waves over a submerged bar can produce results that are in general agreement with some laboratory measurements. Some remarks arising from the comparison between the computational and experimental results are presented. |
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| Keywords: | Wave propagation k– turbulence model VOF method Submerged bar |
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