| The New Form of Time-Dependent Mild Slope Equation for Random Waves |
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| 作者单位： | Zhang Yonggang，Li Yucheng Teng Bin Doctor Degree Candidate，The National Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116023Professor，The National，Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116023Associate Professor，The National Key Laboratory of Coastal and Offshore Engineering，Dalian University of Technology，Dalian 116023 |
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| 摘 要： | The mild-slope equation derived by Berkhoff (1972), has widely been used in the numerical calculation of refraction and diffraction of regular waves. However, it is well known that the random sea waves has a significant effect in the refraction and diffraction problems. In this paper, a new form of time-dependent mild slope equation for irregular waves was derived with Fade approximation and Kubo's time series concept. The equation was simplified using WKB method, and simple and practical irregular mild slope equation was obtained. Results of numerical calculations are compared with those of laboratory experiments.
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The New Form of Time-Dependent Mild Slope Equation for Random Waves |
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| Zhang Yonggang,Li Yucheng Teng Bin Doctor Degree Candidate,The National Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian Professor,The National,Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian Associate Professor,The National Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian. The New Form of Time-Dependent Mild Slope Equation for Random Waves[J]. China Ocean Engineering, 1995, 0(4) |
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| Authors: | Zhang Yonggang Li Yucheng Teng Bin Doctor Degree Candidate The National Key Laboratory of Coastal Offshore Engineering Dalian University of Technology Dalian Professor The National Key Laboratory of Coastal Offshore Engineering Dalian University of Technology Dalian Associate Professor The National Key Laboratory of Coastal Offshore Engineering Dalian University of Technology Dalian |
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| Affiliation: | Zhang Yonggang,Li Yucheng Teng Bin Doctor Degree Candidate,The National Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023Professor,The National,Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023Associate Professor,The National Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116023 |
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| Abstract: | The mild-slope equation derived by Berkhoff (1972), has widely been used in the numerical calculation of refraction and diffraction of regular waves. However, it is well known that the random sea waves has a significant effect in the refraction and diffraction problems. In this paper, a new form of time-dependent mild slope equation for irregular waves was derived with Fade approximation and Kubo's time series concept. The equation was simplified using WKB method, and simple and practical irregular mild slope equation was obtained. Results of numerical calculations are compared with those of laboratory experiments. |
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| Keywords: | random wave mild slope equation Fade approximation WKB method simulation |
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