A quasi-geostrophic convection model for planetary systems using a domain decomposition method
文献类型：期刊论文
| 作者 | Feng, Tianhou; Liao, Xinhao ; Zhang, Keke
|
| 刊名 | PHYSICS OF THE EARTH AND PLANETARY INTERIORS
 |
| 出版日期 | 2007-08-15 |
| 卷号 | 163期号:1-4页码:266-282 |
| 关键词 | quasi-geostrophic approximation nonlinear convection domain decomposition methods |
| 英文摘要 | A numerical study is described of a quasi-geostrophic model for thermal convection in rapidly rotating planetary systems where the effect of Coriolis forces is dynamically predominant. In the quasi-geostrophic convection model, a spherical shell is divided into the three domains: a spherical annulus outside the tangent cylinder touching the equator of the inner sphere, the southern and northern polar regions inside the tangent cylinder. Convection in the rotating spherical annulus is investigated using a quasi-two-dimensional geostrophic approximation. Both linear stability analysis and fully nonlinear simulations are carried out. A new domain decomposition method suitable for massively parallel computers is employed in numerical simulations. It is found that, while the structure of mildly nonlinear flows at R = O(10R(c)), where R denotes the Rayleigh number and R-c is its critical value at the onset of convection, is spatially complicated and irregular, the structure of strongly nonlinear flows at R = O(100R(c)) is dominated by an axisymmetric zonal flow that is largely laminar, stable and nearly time-independent, similar to that on giant planets Jupiter and Saturn. We also model the atmospheric circulation of a 51 Pegasus b-type extrasolar planet which is synchronized with its parent star and receives an intensive radiation on its dayside. (c) 2007 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | ROTATING SPHERICAL CONVECTION ; THERMAL-CONVECTION ; SHELLS ; INSTABILITIES ; ONSET |
| 收录类别 | ISTP ; SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000249483200018 |
| 公开日期 | 2010-07-30 |
| 源URL | [http://119.78.226.72//handle/331011/10564]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Astron Observ, Shanghai 200030, Peoples R China 2.Univ Exeter, Ctr Geophys & Astrophys Fluid Dynam, Dept Math Sci, Exeter EX4 4QE, Devon, England |
| 推荐引用方式 GB/T 7714 | Feng, Tianhou,Liao, Xinhao,Zhang, Keke. A quasi-geostrophic convection model for planetary systems using a domain decomposition method[J]. PHYSICS OF THE EARTH AND PLANETARY INTERIORS,2007,163(1-4):266-282. |
| APA | Feng, Tianhou,Liao, Xinhao,&Zhang, Keke.(2007).A quasi-geostrophic convection model for planetary systems using a domain decomposition method.PHYSICS OF THE EARTH AND PLANETARY INTERIORS,163(1-4),266-282. |
| MLA | Feng, Tianhou,et al."A quasi-geostrophic convection model for planetary systems using a domain decomposition method".PHYSICS OF THE EARTH AND PLANETARY INTERIORS 163.1-4(2007):266-282. |
入库方式： OAI收割
来源：上海天文台
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