Transient mixed convection in an enclosure driven by a sliding lid |
| |
Authors: | Tae Ho Ji Seo Young Kim Jae Min Hyun |
| |
Institution: | (1) Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, Yusong-gu, 305-701 Daejon, South Korea;(2) Thermal/Flow Control Research Center, Korea Institute of Science and Technology, Cheongryang, P.O. Box 131, 130-650 Seoul, South Korea;(3) Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, Yusong-gu, 305-701 Daejon, South Korea |
| |
Abstract: | Transient convection of an incompressible viscous fluid in a square cavity is investigated. The temperature at the top lid
is higher than that at the bottom wall, producing a stably stratified overall configuration. The vertical sidewalls are insulated.
Flow is initiated by an impulsive start of the sliding motion of the top lid. The transient features of the mixed convection
are delineated by procuring numerical solutions in a wide range of parameters, i.e., 400≤Re≤4,000, 1.6×105≤Gr≤1.6×107. Flows and heat transfer characteristics are described both in the interior core and boundary-layer regions. In the large-time
limit, the steady state features are depicted. Parallel experimental efforts are made by employing the particle image velocimetry
(PIV) to visualize the steady state flow and thermal fields, together with thermocouple measurements. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|