| Estimation of Water Particle Velocities by Empirical Transfer Function |
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| 作者单位： | Chiu Yung-Fang Kuo Yi-Yu
Chief of Coastal Engineering Division，Institute of Harbor & Marine Technology Wuchi，Taichung，Taiwan，China
Professor，Department of Civil Engineering，National Chiao Tung University，Hsinchu，Taiwan，China |
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| 摘 要： | -In previous and this studies it appears that the linear and nonlinear wave theory can notaccurately and easily predict the water particle velocities.Therefore,different from the theoretical consider-ations,in this study we have attempted to determine the transfer function empirically.Laboratory experi-ments were performed under various wave conditions.The empirical formulas of the transfer function ofthe wave height,angular frequency and water particle velocity were obtained on the basis of these test databy dimensional analysis and regression analysis.In intermediate and deep water depth conditions,thetransfer function was only a function of a nondimensional parameter which is composed of the angular fre-quency,the depth of the velocity gauge under the still water level,water depth and the acceleration of grav-ity.Finally,the empirical formulas were compared with experimental data and observational data formpresent and Cavaleri's(1978)studies.The empirical formulas were found to be in sufficient correl
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Estimation of Water Particle Velocities by Empirical Transfer Function |
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| Authors: | Chiu Yung-Fang Kuo Yi-Yu Chief of Coastal Engineering Division |
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| Institution: | Chiu Yung-Fang Kuo Yi-Yu
Chief of Coastal Engineering Division,Institute of Harbor & Marine Technology Wuchi,Taichung,Taiwan,China
Professor,Department of Civil Engineering,National Chiao Tung University,Hsinchu,Taiwan,China |
| |
| Abstract: | In previous and this studies it appears that the linear and nonlinear wave theory can not accurately and easily predict the water particle velocities. Therefore, different from the theoretical considerations, in this study we have attempted to determine the transfer function empirically. Laboratory experiments were performed under various wave conditions. The empirical formulas of the transfer function of the wave height, angular frequency and water particle velocity were obtained on the basis of these test data by dimensional analysis and regression analysis. In intermediate and deep water depth conditions, the transfer function was only a function of a nondimensional parameter which is composed of the angular frequency, the depth of the velocity gauge under the still water level, water depth and the acceleration of gravity. Finally, the empirical formulas were compared with experimental data and observational data form present and Cavaleri's (1978) studies. The empirical formulas were found to be in sufficient correltion with these data. |
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| Keywords: | water particle velocity empirical transfer Junction |
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