摘要
本文以风浪频谱和其相关函数的关系为基础,应用积分中值定理,给出了风浪相关函数的理论模型。进而以文氏等人的理论风浪频谱为原型,通过数值积分和待定系数法,给出了以风浪频谱的零阶矩m_0、峰频率ω_0和峰度因子P为参数的深水风浪相关函数式。最后把该式与数值计算值、实测值作了对比,证明本文所提出的深水风浪相关函数式较好地反映了各种不同成长状态的实际的相关函数。
Based on the relationship between the spectrum and correlation function of wind waves, using the theorem of mean of integration, this paper presents a theoretical model for wind wave correlation functions. Using the inverse Fourier transform of Wen's theoretical wind-wave frequeney spectrum, the wind-wave correlation function is expressed as a function of the zeroth order moment m0, the peak frequency ω0 and the peakness factor P of the spectrum. Comparision between the theoretical values of the correlation function and observations shows that the theoretical correlation function formula is a good approximation to the actual correlation function for wind waves of different states of development.
基金
青岛海洋大学科研基金
关键词
相关函数
深水
风浪
风浪频谱
海浪
Deep sea
wind wave
correlation function
wind-wave frequency spectra
