IOCAS-IR  > 海洋环流与波动重点实验室
Vertical alignment of stagnation points in pseudo-plane ideal flows
Sun, Che1,2
2017-09-01
发表期刊AIP ADVANCES
卷号7期号:9
文章类型Article
摘要Recent studies of pseudo-plane ideal flow (PIF) reveal a ubiquitous presence of vortex alignment in both homogeneous and stratified fluids, and in both inertial and rotating reference frames as well. The exact solutions of a steady-state PIF model suggest that stagnation points tend to be vertically aligned and the concentric structure represents a fixed-point phenomenon of the Euler equations. Exception occurs in the rotating frame when a flow holds inertial period and skew center becomes possible. Properties of stagnation points based on Morse theory are obtained, leading to a topological explanation of vertical alignment via pressure Hessian. The study thus uncovers a new aspect of vortex behavior in ideal fluid that requires vortex center to align with the direction of gravity when vortex evolution reaches a laminar end state characterized by steady pseudo-plane velocities. Though the phenomenon arises from the constraint of the Euler equations, under specific conditions the topological theory is applicable to viscous fluid and explains the curvilinear tilting of von Karman swirling vortex. (C) 2017 Author(s).
DOI10.1063/1.5000049
收录类别SCI
语种英语
WOS记录号WOS:000412070600087
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/143215
专题海洋环流与波动重点实验室
作者单位1.Chinese Acad Sci, Inst Oceanol, 7 Nanhai Rd, Qingdao 266071, Peoples R China
2.Natl Lab Marine Sci & Technol, 1 Wenhai Rd, Qingdao 266037, Peoples R China
推荐引用方式
GB/T 7714
Sun, Che. Vertical alignment of stagnation points in pseudo-plane ideal flows[J]. AIP ADVANCES,2017,7(9).
APA Sun, Che.(2017).Vertical alignment of stagnation points in pseudo-plane ideal flows.AIP ADVANCES,7(9).
MLA Sun, Che."Vertical alignment of stagnation points in pseudo-plane ideal flows".AIP ADVANCES 7.9(2017).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Vertical alignment o(5841KB)期刊论文出版稿开放获取CC BY-NC-SA浏览 请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Sun, Che]的文章
百度学术
百度学术中相似的文章
[Sun, Che]的文章
必应学术
必应学术中相似的文章
[Sun, Che]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Vertical alignment of stagnation points in pseudo-plane ideal flows.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

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。