| The Mathematical and Parameterized Expressions for Wave Induced Excess Flow of Momentum |
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| 作者姓名： | 朱首贤 丁平兴 张文静 |
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| 作者单位： | State Key Laboratory of Estuarine and Coastal Research East China Normal University，State Key Laboratory of Estuarine and Coastal Research，East China Normal University，Meteorology Institute of the PLA Science and Engineering University，Shanghai 200062，China Meteorology Institute of the PLA Science and Engineering University，Nanjing 211101，China，Shanghai 200062，China，Nanjing 211101，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
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| 摘 要： | Wave induced excess flow of momentum(WIEFM)is the averaged flow of momentum over a wave period due to wave presence,which may also be called 3-D radiation stress.In this paper,the 3-D current equations with WIEFM are derived from the averaged Navier-Stokes equations over a wave period,in which the velocity is separated into the large-scale background velocity,the wave particle velocity and the turbulent fluctuation velocity.A concept of wave fluctuating layer(WFL)is put forward,which is the vertical column from the wave trough to wave ridge.The mathematical expressions of WIEFM in WFL and below WFL are given separately.The parameterized expressions of WIEFM are set up according to the linear wave theory.The integration of WIEFM in the vertical direction equals the traditional radiation stress(namely 2-D radiation stress)given by Longuet-Higgins and Stewart.
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| 关 键 词： | 波浪剩余动量流 数学表达式 参数化表达式 辐射应力 |
| 收稿时间： | 2006-06-25 |
| 修稿时间： | 2006-12-20 |
The Mathematical and Parameterized Expressions for Wave Induced Excess Flow of Momentum |
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| ZHU Shou-xian,DING Ping-xing,ZHANG Wen-jing.The Mathematical and Parameterized Expressions for Wave Induced Excess Flow of Momentum[J].China Ocean Engineering,2007,21(1):137-146. |
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| Authors: | ZHU Shou-xian DING Ping-xing ZHANG Wen-jing |
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| Abstract: | Wave induced excess flow of momentum(WIEFM)is the averaged flow of momentum over a wave period due to wave presence,which may also be called 3-D radiation stress.In this paper,the 3-D current equations with WIEFM are derived from the averaged Navier-Stokes equations over a wave period,in which the velocity is separated into the large-scale background velocity,the wave particle velocity and the turbulent fluctuation velocity.A concept of wave fluctuating layer(WFL)is put forward,which is the vertical column from the wave trough to wave ridge.The mathematical expressions of WIEFM in WFL and below WFL are given separately.The parameterized expressions of WIEFM are set up according to the linear wave theory.The integration of WIEFM in the vertical direction equals the traditional radiation stress(namely 2-D radiation stress)given by Longuet-Higgins and Stewart. |
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| Keywords: | wave induced excess flow of momentum wave fluctuating layer radiation stress |
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