期刊论文

An application of nonlinear stream function in analysis of experimental wind-wave field

中文

热带海洋学报

1009-5470

2019

38

1

19-26

10.11978/2018039

国家自然科学基金项目（51239001）~~；

本校为第一机构

风作用于水面产生风浪, 其中由于波流紊动产生的动量和能量的交换机制是一个很复杂的过程.风应力一般用来描述这种能量交换, 可以分为3个部分: 水面的剪切力、波生应力以及紊动应力.采用一种有效的非线性波流分离方法——NSFM(Nonlinear Stream Function Method)对波流运动的动量和能量输移进行定性描述.构造能够有效表达非线性波浪的解析流函数, 摄动求解使其满足拉普拉斯方程、动力边界条件和运动边界条件, 结合实验室风浪数据, 分离出波生速度场.通过交叉谱分析, 得到波生雷诺应力在不同风速下对风应力的贡献.结果表明: NSFM对不同工况条件下的风浪的处理具有较高的精度, 模型适应性良好; 且...

The wind on the water surface can create wind waves. The exchange mechanism of momentum and energy due to the turbulence of wave current is a complicated process. Wind stress is generally used to describe this energy exchange, and can be divided into three components: shear stress, wave induced stress and turbulent stress. An effective nonlinear wave current separation method, namely, the Nonlinear Stream Function Method (NSFM), is used to qualitatively describe the momentum and energy transports between wave and current. An analytical stream function is constructed, which can effectively expr...