Convection in rotating annular channels heated from below. Part 2. Transitions from steady flow to turbulence
文献类型：期刊论文
| 作者 | Chang, Yingli; Liao, Xinhao ; Zhang, Keke
|
| 刊名 | GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS
 |
| 出版日期 | 2006-06-01 |
| 卷号 | 100期号:3页码:215-241 |
| 关键词 | rotation annular channel nonlinear convection |
| 英文摘要 | We report the results of fully three-dimensional numerical simulations of nonlinear convection in a Boussinesq fluid in an annular channel rotating about a vertical axis with lateral no-slip or stress-free sidewalls, stress-free top and bottom, uniformly heated from below, a problem first studied by Davies-Jones and Gilman (1971) and Gilman (1973). A substantial range of the Rayleigh number R (R-c <= R <= O(100R(c))), where R-c denotes the critical value at the onset of convection) is considered. It is found that the wall-localized convection mode, unaffected by the velocity boundary condition imposed on the sidewalls, is nonlinearly robust. Both directions of travelling waves, one propagating against the sense of rotation near the outer sidewall and the other propagating in the same sense as the rotation in the vicinity of the inner sidewall, are always present in the nonlinear solutions. In contrast to nonlinear convection in a rotating Benard layer, neither convection rolls nor the Kupper-Lortz instability can exist in a rotating annular channel because of the effect of the sidewalls. It is the nonlinear interaction between the wall-localized modes and the internal mode that plays an essential role in determining the nonlinear properties of convection in a rotating annular channel. Our studies reveal systematically the various nonlinear phenomena, from steady travelling waves trapped in the vicinities of the sidewalls to convective turbulence exhibiting columnar structure. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Astronomy & Astrophysics ; Geochemistry & Geophysics ; Mechanics |
| 研究领域[WOS] | Astronomy & Astrophysics ; Geochemistry & Geophysics ; Mechanics |
| 关键词[WOS] | RAYLEIGH-BENARD CONVECTION ; SPHERICAL-SHELL ; THERMAL-CONVECTION ; FLUID LAYER ; STABILITY ; DRIVEN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000240436100004 |
| 源URL | [http://119.78.226.72/handle/331011/19328]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Univ Exeter, Ctr Geophys & Astrophys Fluid Dynam, Exeter EX4 4QE, Devon, England 2.Univ Exeter, Dept Math Sci, Exeter EX4 4QE, Devon, England 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chang, Yingli,Liao, Xinhao,Zhang, Keke. Convection in rotating annular channels heated from below. Part 2. Transitions from steady flow to turbulence[J]. GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS,2006,100(3):215-241. |
| APA | Chang, Yingli,Liao, Xinhao,&Zhang, Keke.(2006).Convection in rotating annular channels heated from below. Part 2. Transitions from steady flow to turbulence.GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS,100(3),215-241. |
| MLA | Chang, Yingli,et al."Convection in rotating annular channels heated from below. Part 2. Transitions from steady flow to turbulence".GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS 100.3(2006):215-241. |
入库方式： OAI收割
来源：上海天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。