On fluid motion in librating ellipsoids with moderate equatorial eccentricity
文献类型：期刊论文
| 作者 | Zhang, Keke1; Chan, Kit H.2; Liao, Xinhao3
|
| 刊名 | JOURNAL OF FLUID MECHANICS
 |
| 出版日期 | 2011-04-01 |
| 卷号 | 673期号:673页码:468-479 |
| 关键词 | geophysical and geological flows rotating flows topographic effects |
| 英文摘要 | The motion of a homogeneous fluid of viscosity nu confined in a librating ellipsoidal cavity with semi-axes a and moderate equatorial eccentricity E is investigated. The ellipsoid rotates with an angular velocity Omega(0)(1 + d delta sin (omega) over capt), where Omega(0) is the mean rate of rotation, (omega) over cap is the libration frequency and Omega(0)delta represents the amplitude of longitudinal libration. When delta << E(2) and E(1/2) << E(2) << 1, where E is the Ekman number defined as E = nu/(a(2)Omega(0)), an explicit analytical solution describing fluid motion in librating ellipsoids is derived for any size of the libration frequency (omega) over cap. Three-dimensional numerical simulations of the same problem are also performed, revealing the generation of mean zonal flow in librating ellipsoidal cavities and showing a satisfactory agreement between the asymptotic and numerical analyses. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Mechanics ; Physics, Fluids & Plasmas |
| 研究领域[WOS] | Mechanics ; Physics |
| 关键词[WOS] | ROTATING SPHERICAL CAVITY ; INERTIAL OSCILLATIONS ; MOLTEN CORE ; FLOWS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000289534000018 |
| 公开日期 | 2014-10-27 |
| 源URL | [http://119.78.226.72//handle/331011/15342]  |
| 专题 | 上海天文台_行星科学重点实验室 |
| 作者单位 | 1.Univ Exeter, Dept Math Sci, Exeter EX4 4QF, Devon, England 2.Univ Hong Kong, Dept Math, Pokfulam, Hong Kong, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Keke,Chan, Kit H.,Liao, Xinhao. On fluid motion in librating ellipsoids with moderate equatorial eccentricity[J]. JOURNAL OF FLUID MECHANICS,2011,673(673):468-479. |
| APA | Zhang, Keke,Chan, Kit H.,&Liao, Xinhao.(2011).On fluid motion in librating ellipsoids with moderate equatorial eccentricity.JOURNAL OF FLUID MECHANICS,673(673),468-479. |
| MLA | Zhang, Keke,et al."On fluid motion in librating ellipsoids with moderate equatorial eccentricity".JOURNAL OF FLUID MECHANICS 673.673(2011):468-479. |
入库方式： OAI收割
来源：上海天文台
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