IMECH-IR  > 高温气体动力学国家重点实验室
Effects of initial radius of the interface and Atwood number on nonlinear saturation amplitudes in cylindrical Rayleigh-Taylor instability
Liu WH; Yu CP(于长平); Li XL(李新亮); Li XL(李新亮)
Source PublicationPhysics of Plasmas
2014
Volume21Pages:112103
ISSN1070-664X
AbstractNonlinear saturation amplitudes (NSAs) of the first two harmonics in classical Rayleigh-Taylor instability (RTI) in cylindrical geometry for arbitrary Atwood numbers have been analytically
investigated considering nonlinear corrections up to the fourth-order. The NSA of the fundamental mode is defined as the linear (purely exponential) growth amplitude of the fundamental mode at
the saturation time when the growth of the fundamental mode (first harmonic) is reduced by 10% in comparison to its corresponding linear growth, and the NSA of the second harmonic can be obtained in the same way. The analytic results indicate that the effects of the initial radius of the interface (r0) and the Atwood number (A) play an important role in the NSAs of the first two harmonics in cylindrical RTI. On the one hand, the NSA of the fundamental mode first increases slightly and then decreases quickly with increasing A. For given A, the smaller the r0=k (with k
perturbation wavelength) is, the larger the NSA of the fundamental mode is. When r0=k is large enough (r0  k), the NSA of the fundamental mode is reduced to the prediction of previous literatures within the framework of third-order perturbation theory [J. W. Jacobs and I. Catton, J. Fluid Mech. 187, 329 (1988); S. W. Haan, Phys. Fluids B 3, 2349 (1991)]. On the other hand, the NSA of the second harmonic first decreases quickly with increasing A, reaching a minimum, and then increases slowly. Furthermore, the r0 can reduce the NSA of the second harmonic for arbitrary A at r0 2k while increase it for A0:6 at r0 2k. Thus, it should be included in applications where the NSA has a role, such as inertial confinement fusion ignition target design.
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000345644200006
DepartmentLHD可压缩湍流
Classification一类
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49383
Collection高温气体动力学国家重点实验室
Corresponding AuthorLi XL(李新亮)
Recommended Citation
GB/T 7714
Liu WH,Yu CP,Li XL,et al. Effects of initial radius of the interface and Atwood number on nonlinear saturation amplitudes in cylindrical Rayleigh-Taylor instability[J]. Physics of Plasmas,2014,21:112103.
APA Liu WH,Yu CP,Li XL,&李新亮.(2014).Effects of initial radius of the interface and Atwood number on nonlinear saturation amplitudes in cylindrical Rayleigh-Taylor instability.Physics of Plasmas,21,112103.
MLA Liu WH,et al."Effects of initial radius of the interface and Atwood number on nonlinear saturation amplitudes in cylindrical Rayleigh-Taylor instability".Physics of Plasmas 21(2014):112103.
Files in This Item: Download All
File Name/Size DocType Version Access License
LiuWH-Effect of init(1169KB) 开放获取LicenseView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Liu WH]'s Articles
[Yu CP(于长平)]'s Articles
[Li XL(李新亮)]'s Articles
Baidu academic
Similar articles in Baidu academic
[Liu WH]'s Articles
[Yu CP(于长平)]'s Articles
[Li XL(李新亮)]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Liu WH]'s Articles
[Yu CP(于长平)]'s Articles
[Li XL(李新亮)]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: LiuWH-Effect of initial radius-PoP2014.pdf
Format: Adobe PDF
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.