| DOI: | 10.2172/1110818
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| 报告号: | Final Technical Report
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| 报告题名: | Dynamics and Statistical Mechanics of Rotating and non-Rotating Vortical Flows |
| 作者: | Lim, Chjan [RPI]
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| 出版年: | 2013
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| 发表日期: | 2013-12-18
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | Spherical Energy-Enstrophy Models and Analyses for quasi-2D Flows Spherical geometry
; planetary atmospheres
; super-rotation on Venus
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| 中文主题词: | 大气科学
; 高温
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| 主题词: | ATMOSPHERE
; HEAT
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| 英文摘要: | Three projects were analyzed with the overall aim of developing a computational/analytical model for estimating values of the energy, angular momentum, enstrophy and total variation of fluid height at phase transitions between disordered and self-organized flow states in planetary atmospheres. It is believed that these transitions in equilibrium statistical mechanics models play a role in the construction of large-scale, stable structures including super-rotation in the Venusian atmosphere and the formation of the Great Red Spot on Jupiter. Exact solutions of the spherical energy-enstrophy models for rotating planetary atmospheres by Kac's method of steepest descent predicted phase transitions to super-rotating solid-body flows at high energy to enstrophy ratio for all planetary spins and to sub-rotating modes if the planetary spin is large enough. These canonical statistical ensembles are well-defined for the long-range energy interactions that arise from 2D fluid flows on compact oriented manifolds such as the surface of the sphere and torus. This is because in Fourier space available through Hodge theory, the energy terms are exactly diagonalizable and hence has zero range, leading to well-defined heat baths. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1110818
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/40876
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| 1110818.pdf（132KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Lim, Chjan [RPI]. Dynamics and Statistical Mechanics of Rotating and non-Rotating Vortical Flows. 2013-01-01.
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