中国科学院力学研究所机构知识库
Advanced  
IMECH-IR  > 高温气体动力学国家重点实验室  > 期刊论文
Title: Complex Transition of Double-Diffusive Convection in a Rectangular Enclosure with Height-to-Length Ratio Equal to 4: Part I
Author: Liang X(梁贤); Li XL(李新亮); Fu DX(傅德薰); Ma YW(马延文)
Source: Communications in Computational Physics
Issued Date: 2009
Volume: 6, Issue:2, Pages:247-268
Abstract: This is the first part of direct numerical simulation (DNS) of double-diffusive convection in a slim rectangular enclosure with horizontal temperature and concentration gradients. We consider the case with the thermal Rayleigh number of 10^5, the Pradtle number of 1, the Lewis number of 2, the buoyancy ratio of composition to temperature being in the range of [0,1], and height-to-width aspect ration of 4. A new 7th order upwind compact scheme was developed for approximation of convective terms, and a three-stage third-order Runge-Kutta method was employed for time advancement. Our DNS suggests that with the buoyancy ratio increasing form 0 to 1, the flow of transition is a complex series changing fromthe steady to periodic, chaotic, periodic, quasi-periodic, and finally back to periodic. There are two types of periodic flow, one is simple periodic flow with single fundamental frequency (FF), and another is complex periodic flow with multiple FFs. This process is illustrated by using time-velocity histories, Fourier frequency spectrum analysis and the phase-space rajectories.
Language: 英语
Indexed Type: SCI
Corresponding Author: 梁贤
Correspondent Email: liangx_yan@126.com
DOC Type: Article
WOS Subject: Physics, Mathematical
WOS Subject Extended: Physics
WOS Keyword Plus: NAVIER-STOKES EQUATIONS ; FINITE-DIFFERENCE SCHEMES ; THERMOSOLUTAL CONVECTION ; CONCENTRATION GRADIENTS ; HORIZONTAL TEMPERATURE ; MULTIPLE EQUILIBRIA ; SQUARE CAVITY ; FLOW ; FIELDS ; REGIME
WOS ID: WOS:000267111200002
ISSN: 1815-2406
Subject: 流体力学
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/28799
Appears in Collections:高温气体动力学国家重点实验室_期刊论文

Files in This Item: Download All
File Name/ File Size Content Type Version Access License
cicp-247_Xian-Liang.pdf(2535KB)----开放获取View Download

Recommended Citation:
COMMUNICATIONS IN COMPUTATIONAL PHYSICS.2009,6(2):247-268
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[梁贤]'s Articles
[李新亮]'s Articles
[傅德薰]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[梁贤]‘s Articles
[李新亮]‘s Articles
[傅德薰]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit
文件名: cicp-247_Xian-Liang.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

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

 

 

Valid XHTML 1.0!
Copyright © 2007-2017  中国科学院力学研究所 - Feedback
Powered by CSpace