【摘要】 本文对湍流风波空间增长率进行实测和理论分析。在风波相互作用中引入波诱导雷诺应力并用涡流粘度予以封闭。通过对风波随机界面的分析提出了湍流界面层概念,从而导出了与相平均运动方程相容的界面动力学条件。这些理论上的改进大大改善了风波空间增长率的预测,我们的计算和实验结果符合良好。更多还原

【Abstract】 The spatial growth rates of turbulent wind waves has been measured and studied theoretically. The wave induced Reynolds stress is introduced into the wind wave interaction and closed by the eddy viscosity model. A turbulent interfacial layer is assumed at the random boundary between wind and water and the dynamic boundary conditions at the phase averaged interface are derived which are consistent with the phase averaged governing equations. The inclusion of Reynolds stress and the turbulent interfacial layer makes great improvement in the prediction of the growth rates of wind waves which is in good agreement with measurements.更多还原