Stability of Axisymmetric Flows in Cylindrical Rayleigh-B(e)nard Convection

摘要：

The instability and transition of flow in a vertical cylindrical cavity with heated bottom, cooled top and insulated side wall are investigated by global instability analysis. We found there exists a stable nontrivial axisymmetric flow after the second bifurcation in certain ranges of Prandtl number and height to radius ratio. The stability boundary are given for Prandtl numbers from approximate zero to 1.0 and for aspect ratios A equal to 1.0, 0.9 respectively. The instability mechanisms are also discussed.

关键词： Rayleigh-B(e)nard convection global linear instability axisymmetric flow

作者: B. F. Wang D. J. Ma D. J. Sun

作者单位: Department of Modern Mechanics, University of Science and Technology of China, Hefei 230027, China School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, GA, USA

会议类型: 国际会议

会议名称: 第六届流体力学国际会议

会议地点: 广州

会议语种:英文

页码: 101-103

在线出版日期: 2011-06-30（万方平台首次上网日期，不代表论文的发表时间）