Observation of the Turbulent Burst near ASheared Air-Water Interface

作     者：Shuangfeng WANG Fu JIA Zhennan NIU Zhangzhi WU(Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China)(State Key Laboratory for Turbulence Research, Peking University, Beijing 100871,China) 

作者机构：Institute of Mechanics Chinese Academy of Sciences Beijing 100080 China 

出 版 物：《Communications in Nonlinear Science and Numerical Simulation》 (非线性科学与数值模拟通讯(英文版))

年 卷 期：1999年第4卷第2期

页      面：94-99页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

主　　题：air-water interface turbulent burst flow-visualization 

摘      要：The turbulent burst under a sheared air-water interface was experimentally investigated using hydrogen bubble visualization technique. The surface shear wasimposed by an airflow over the water flow which was kept free from surface waves. Resultsshow that the wind shear has the main influence on the bursting events. At relativelyhigh shear rates, the flow near the interface is dominated primarily by intermittent bursting events. The general features of bursting processes are described in some detail. Theobserved bursting events show qualitative similarities with those occurring in near-wallturbulence. However, a few distinctive phenomena were also observed, including the existence of vertical vortices and thickening process of the boundary layer, which appear tobe associated with the Characteristics of air-water interface.