| タイトル | Double Resonances and Spectral Scaling in the Weak Turbulence Theory of Rotating and Stratified Turbulence |
| 本文（外部サイト） | http://hdl.handle.net/2060/19990032567 |
| 著者（英） | Rubinstein, Robert |
| 著者所属（英） | Institute for Computer Applications in Science and Engineering |
| 発行日 | 1999-02-01 |
| 言語 | eng |
| 内容記述 | In rotating turbulence, stably stratified turbulence, and in rotating stratified turbulence, heuristic arguments concerning the turbulent time scale suggest that the inertial range energy spectrum scales as k(exp -2). From the viewpoint of weak turbulence theory, there are three possibilities which might invalidate these arguments: four-wave interactions could dominate three-wave interactions leading to a modified inertial range energy balance, double resonances could alter the time scale, and the energy flux integral might not converge. It is shown that although double resonances exist in all of these problems, they do not influence overall energy transfer. However, the resonance conditions cause the flux integral for rotating turbulence to diverge logarithmically when evaluated for a k(exp -2) energy spectrum; therefore, this spectrum requires logarithmic corrections. Finally, the role of four-wave interactions is briefly discussed. |
| NASA分類 | Fluid Mechanics and Heat Transfer |
| レポートNO | ICASE-99-7
NAS 1.26:208996
NASA/CR-1999-208996 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/96548 |
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