红树林多孔介质阻力模型与消波效果仿真分析
Porous medium resistance model and simulation on effect of wave dissipation of mangrove forest
查看参考文献30篇
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文摘
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滩涂植被的防风消浪对堤岸保护具有重要作用,该研究根据动量守恒方程和多孔介质源项为速度的冪率方程,建立红树林多孔介质水流阻力数学模型,并利用计算流体动力学软件Fluent分析不同影响因子对红树林水流的阻力效果,结果显示:林带疏透度、宽度及水深与消波效应具有密切关系,其中,林带宽度的消波效应更明显;波速随疏透度的增加起初呈现急剧增加的趋势,当疏透度大于0.4时,波速变化较平缓;随着林带宽度增加,波速呈不同程度下降趋势,4参数Logistic方程拟合结果显示,波速随林带宽度增加呈反S型曲线下降。该研究可为红树林抗浪效果与性能评价提供参考。 |
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其他语种文摘
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Wind and wave dissipation of tidal flat vegetation plays an important role in the embankment protection. The flow resistance mathematical models for mangrove porous media were built based on the momentum conservation equation and exponent equation using porous media source of speed. The effects of different factors on the flow resistance of mangrove were analyzed by using computational fluid dynamics software, Fluent. The results showed that the dissipation effect was involved in the porosity, the width of shelterbelt, and the depth of wave. Of which, the effect of water depth on wave dissipation was most obvious. With the increase in the porosity, the wave velocity increased sharply at first, and then increased slightly as the porosity was more than 0.4. With increase in the forest belt width, the wave velocity decreased at different degree. The fitting results of Logistic equation based on 4 parameters showed that wave velocity presented a decrease tendency of anti-S-Shape with increase of the forest belt width. Based on above results, a new approach was put forward for evaluation of the effect of mangroves on wave dissipation. |
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来源
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农业工程学报
,2012,28(23):92-97 【核心库】
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关键词
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数值模拟
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模型
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红树林
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消波效应
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地址
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1.
江苏大学农业工程研究院, 现代农业装备与技术教育部重点实验室;;环境地球化学国家重点实验室, 镇江, 212013
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江苏大学农业工程研究院, 现代农业装备与技术教育部重点实验室, 镇江, 212013
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中国林业科学研究院热带林业研究所, 广州, 510520
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语种
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中文 |
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ISSN
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1002-6819 |
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学科
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农业工程 |
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基金
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消浪红树林带防护效益研究及人工红树林生态功能恢复评价
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国家科技支撑计划项目
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文献收藏号
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CSCD:4706861
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