Velocity oscillations in turbulent Rayleigh-Benard convection

被引：72
|
作者：
Qiu, XL [1 ]
Shang, XD
Tong, P
Xia, KQ
机构：
[1] Oklahoma State Univ, Dept Phys, Stillwater, OK 74078 USA
[2] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
[3] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China
来源：
PHYSICS OF FLUIDS | 2004年 / 16卷 / 02期
关键词：
D O I：
10.1063/1.1637350
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A systematic study of velocity oscillations in turbulent thermal convection is carried out in small aspect-ratio cells filled with water. Local velocity fluctuations and temperature-velocity cross-correlation functions are measured over varying Rayleigh numbers and spatial positions across the entire convection cell. These structural measurements reveal how the thermal plumes interact with the bulk fluid in a closed cell and provide an interesting physical picture for the dynamics of the temperature and velocity oscillations in turbulent convection. (C) 2004 American Institute of Physics.
引用
收藏
页码：412 / 423
页数：12
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