| 近岸波生流运动三维数值模拟及验证 |
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| 引用本文： | 解鸣晓,张玮.近岸波生流运动三维数值模拟及验证[J].水科学进展,2011,22(3):391-399. |
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| 作者姓名： | 解鸣晓 张玮 |
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| 作者单位： | 1.交通运输部天津水运工程科学研究所, 工程泥沙交通行业重点实验室, 天津300456; |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项基金项目 |
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| 摘 要： | 开发建立了近岸波生流运动三维数值计算模式。模式中,引入了三维时均剩余动量、破波表面水滚、波浪水平与垂向紊动作为主要驱动力,同时考虑了波流共同作用的底部剪切力。推导了可综合反映底坡、能量传递率和密度影响的水滚能量传输方程;将Larson-Kraus的二维波浪水平紊动系数表达式拓展至三维。采用大量实测数据和文献资料测试验证了所建模式,表明所建模式可有效模拟波浪增减水、底部离岸流、沿岸流、裂流、堤后环流等不同维度的波生流现象。此外,研究也表明破波水滚效应可解释波生流峰值向岸推移的物理现象,从而在模拟中不能忽略;破波带内沿岸流速垂向较为均匀的现象与波浪附加垂向紊动有关。
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| 关 键 词： | 三维波生流 时均剩余动量 破波水滚 波浪紊动 模式验证 |
| 收稿时间： | 2010-06-25 |
3D numerical modeling of nearshore wave-induced currents |
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| XIE Ming-xiao,ZHANG Wei.3D numerical modeling of nearshore wave-induced currents[J].Advances in Water Science,2011,22(3):391-399. |
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| Authors: | XIE Ming-xiao ZHANG Wei |
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| Institution: | 1.Key Laboratory of Engineering Sediment of Ministry of Transport, Tianjin Research Institute for Water Transport Engineering, Ministry of Transport, Tianjin 300456, China;2.College of Civil Engineering, Tianjin University, Tianjin 300072, China;3.College of Harbor, Coastal and Offshore Engineering, Hohai University, Nanjing 210098, China |
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| Abstract: | A three-dimensional(3D) numerical model for nearshore wave-induced currents is established,in which the phase-averaged 3D residual momentum flux,surface roller and wave turbulence are introduced as driving forces,and the wave-current combined bottom shear stress is taken into account.An energy balance equation of the surface roller is derived,considering the bottom slope,energy transmission rate and roller density.The Larson-Kraus formula for the 2D wave turbulent mixing coefficient is extended to its 3D fo... |
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| Keywords: | 3D wave-induced current phase-averaged residual momentum surface roller wave turbulence model validation |
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