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Structure of turbulence within a two-layered stratified flow driven by wind has been investigated by utilizing a flow visualization technique in which tiny drops of toluene and carbon tetracholride mixtures are used as tracers. The visualization shows that large scale organized eddies are generated in the surface shear layer and intrude intermittently down into the region close to the buoyancy interface. These eddies are responsible for not only vertical transport of momentum but also entrainment of denser fluids through the interface. In contrast with the two-layered stratified flow of salt-wedge type, the theoretical dispersion relation for phase speed of interfacial waves hardly hold for the wind driven two-layered flow. Moreover, the occurrence of the interfacial waves are rather random compared with pseudo-regular generation in the salt-wedge type flow. This can be considered to reflect the effects of the above mentioned eddies.
- 社団法人 可視化情報学会の論文
社団法人 可視化情報学会 | 論文
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