標題: An explicit approximation to the wavelength of nonlinear waves
作者: Chang, HK
Lin, SC
土木工程學系
Department of Civil Engineering
關鍵字: explicit approximation;wavelength;nonlinear waves
公開日期: 1-Feb-1999
摘要: An explicit and concise approximation to the wavelength in which the effect of nonlinearity is involved and presented in terms of wave height, wave period, water depth and gravitational acceleration. The present approximation is in a rational form of which Fenton and Mckee's (1990, Coastal Engng 14, 499-513) approximation is reserved in the numerator and the wave steepness is involved ill the denominator. The rational form of this approximation can be converted to an alternative form of a power-series polynomial which indicates that the wavelength increases with wave height and decreases with water depth. If the determined coefficients in the present approximation are fixed, the approximating formula can provide a good agreement with the: wavelengths numerically obtained by Rienecker and Fenton's (1981, J. Fluid Mech. 104, 119-137) Fourier series method, but has large deviations when waves of small amplitude are in deep water or all waves are in shallow water, The present approximation with variable coefficients can provide excellent predictions of the wavelengths for both long and short waves even, for high waves. (C) 1998 Elsevier Science Ltd. All rights reserved.
URI: http://hdl.handle.net/11536/31559
ISSN: 0029-8018
期刊: OCEAN ENGINEERING
Volume: 26
Issue: 2
起始頁: 147
結束頁: 160
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