2009 Fiscal Year Final Research Report
Dissimilar scalar dissipation structures in stratified turbulence with differential diffusion of heat and salinity
| Project/Area Number |
19360084
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
HANAZAKI Hideshi Kyoto University, 工学研究科, 准教授 (60189579)
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| Co-Investigator(Kenkyū-buntansha) |
MIYAZAKI Takeshi 電気通信大学, 大学院・電気通信学研究科, 教授 (50142097)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 成層流体 / 乱流熱物質輸送 |
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| Research Abstract |
The origin of dissimilarity between scalar and velocity spectra in stratified turbulence has been investigated by direct numerical simulation, stratified tank experiments and rapid distortion theory when there is a passive scalar or when there are two active scalars. The results show that when the Ozmidov scale is smaller than the Kolmogorov scale, variance of the active scalar dissipates near the Kolmogorov scale.
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