PIV studies on turbulence structure in air/water interface with wind-induced water waves
When wind appears over the free surface, water waves and turbulence are generated by an interfacial shear stress. In particular, turbulent diffusion promotes significantly mass and momentum transport beneath the interface between the water and air significantly in ocean and lakes, and thus it is very important for global environment problems to reveal such turbulence property and coherent structure. Simultaneous measurements of velocities and free-surface elevation allow us to conduct reasonably the phase analysis of the coherent structure in interfacial shear layer . Furt hermore,multi-point measurements such as PIV are very powerful to detect the space-time structure of coherent motions. Therefore, in the present study, we developed a specially designed PIV system which can measure the velocity components and surfaceelevation fluctuation simultaneously by using two sets of highspeed cameras to reveal the coherent structure in the interfacial shear layer.
air/water interface wind-induced water waves and PIV measurements
Michio Sanjou Iehisa Nezu Akihiro Toda
Department of Civil Engineering,Kyoto University,Katsura Campus,Kyoto
国际会议
9th International Conference on Hydrodynamics(第九届国际水动力学会议 ICHD2010)
上海
英文
350-354
2010-10-11（万方平台首次上网日期，不代表论文的发表时间）