Coupling numerical model of interaction between wave and porous medium with large porosity

CHENG Yong-zhou; WANG Yong-xue; CHEN Zhi-jie; JIANG Chang-bo

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CHENG Yong-zhou, WANG Yong-xue, CHEN Zhi-jie, JIANG Chang-bo. Coupling numerical model of interaction between wave and porous medium with large porosity[J]. Haiyang Xuebao, 2008, 30(5): 143-150.

Citation:

CHENG Yong-zhou, WANG Yong-xue, CHEN Zhi-jie, JIANG Chang-bo. Coupling numerical model of interaction between wave and porous medium with large porosity[J]. Haiyang Xuebao, 2008, 30(5): 143-150.

CHENG Yong-zhou, WANG Yong-xue, CHEN Zhi-jie, JIANG Chang-bo. Coupling numerical model of interaction between wave and porous medium with large porosity[J]. Haiyang Xuebao, 2008, 30(5): 143-150.

Citation:

CHENG Yong-zhou, WANG Yong-xue, CHEN Zhi-jie, JIANG Chang-bo. Coupling numerical model of interaction between wave and porous medium with large porosity[J]. Haiyang Xuebao, 2008, 30(5): 143-150.

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Coupling numerical model of interaction between wave and porous medium with large porosity

1.
School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410076, China;Key Laboratory of Hunan Province for Water & Sediment Science and Water Hazard Prevention, Changsha University of Science & Technology, Changsha 410076, China
2.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China

Received Date: 2008-04-10
Rev Recd Date: 2008-06-16

Abstract

Abstract

A coupling model ofinteraction of wave with porous medium with large porosity is established. The wave field solveris based on the two-dimensional Reynolds averaged Navier-Stokes(RANS)equations with a k-ε closure.A piston-type wave makeris setup in the computational domain to produce incident waves and the free surface is traced through the piecewise linear interface construction-volume off luid.The incident waves can be the linear wave,the cnoidal waves and the solitary waves.For chheimer equations are adopted in porous flow within the porous media.By introducinga velocity-pressure correction equation for the waves and the porous flow,highly efficient coupling between the two flows is realized.The two flows can be solved simultaneously and no boundary condition is needed on the interface between them.It was found that the proposed model is effective for studying interaction of wave with scree seabed and is able to handle the water waves and the submerged porous breakwateron flat and slope beds.The verified numerical model can be used to study the interaction between waves and porous medium with large porosity.
- wave,
- porous medium with large porosity,
- coupling model,
- porous flow

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References(20)

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