Numerical simulation of solitary and randomwave propagation through vegetation based on VOFmethod

ZHANG Mingliang; HAO Zining; ZHANG Yunpeng; WU Weiming

doi:10.1007/s13131-013-0330-4

Numerical simulation of solitary and randomwave propagation through vegetation based on VOFmethod

doi: 10.1007/s13131-013-0330-4

1.
School of Ocean and Environment Engineering, Dalian Ocean University, Dalian 116023, China
2.
National Center for Computational Hydroscience and Engineering, University ofMississippi, University, MS 38677, USA

基金项目: The National Natural Science Foundation of China under contract No. 51279023; the Public Science and Technology Research Funds Projects of Ocean under contract No. 201205023; the Special Funds for Postdoctoral Innovative Projects of Liaoning Province of China under contract No. 2011921018; the Special Funds for Talent Projects of Dalian Ocean University under contract No. SYYJ2011004.

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出版历程
- 收稿日期: 2012-06-09
- 修回日期: 2012-11-14

Numerical simulation of solitary and randomwave propagation through vegetation based on VOFmethod

1.
School of Ocean and Environment Engineering, Dalian Ocean University, Dalian 116023, China
2.
National Center for Computational Hydroscience and Engineering, University ofMississippi, University, MS 38677, USA

摘要

摘要: A vertical two-dimensional numerical model has been applied to solving the Reynolds Averaged Navier- Stokes (RANS) equations in the simulation of current and wave propagation through vegetated and nonvegetated waters. The k-ε model is used for turbulence closure of RANS equations. The effect of vegetation is simulated by adding the drag force of vegetation in the flow momentum equations and turbulence model. To solve the modified N-S equations, the finite difference method is used with the staggered grid system to solver equations. The Youngs’ fractional volume of fluid (VOF) is applied tracking the free surface with second-order accuracy. The model has been tested by simulating dam break wave, pure current with vegetation, solitary wave runup on vegetated and non-vegetated channel, regular and random waves over a vegetated field. Themodel reasonably well reproduces these experimental observations, themodeling approach presented herein should be useful in simulating nearshore processes in coastal domains with vegetation effects.
- VOFmethod /
- vegetation /
- solitary /
- regularandrandomwaves /
- waveheightattenuation /
- k-εmodel
Abstract: A vertical two-dimensional numerical model has been applied to solving the Reynolds Averaged Navier- Stokes (RANS) equations in the simulation of current and wave propagation through vegetated and nonvegetated waters. The k-ε model is used for turbulence closure of RANS equations. The effect of vegetation is simulated by adding the drag force of vegetation in the flow momentum equations and turbulence model. To solve the modified N-S equations, the finite difference method is used with the staggered grid system to solver equations. The Youngs’ fractional volume of fluid (VOF) is applied tracking the free surface with second-order accuracy. The model has been tested by simulating dam break wave, pure current with vegetation, solitary wave runup on vegetated and non-vegetated channel, regular and random waves over a vegetated field. Themodel reasonably well reproduces these experimental observations, themodeling approach presented herein should be useful in simulating nearshore processes in coastal domains with vegetation effects.
- VOFmethod /
- vegetation /
- solitary /
- regular and randomwaves /
- wave height attenuation /
- k-ε model

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参考文献(28)

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文章访问数: 1256
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Numerical simulation of solitary and randomwave propagation through vegetation based on VOFmethod

doi: 10.1007/s13131-013-0330-4

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Numerical simulation of solitary and randomwave propagation through vegetation based on VOFmethod

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出版历程

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