The viscoelastic effects on thermal convection of an Oldroyd-B fluid in open-top porous media

被引：0
|
作者：
Jun Niu
Zai-hong Shi
Wen-chang Tan
机构：
[1] Petroleum Exploration and Production Research Institute of SINOPEC,State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics and Aerospace Engineering, College of Engineering
[2] Peking University,undefined
来源：
Journal of Hydrodynamics | 2013年 / 25卷
关键词：
viscoelastic effect; thermal convection; Oldroyd-B fluids; porous medium;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The effects of two viscoelastic parameters on the thermal convection of a viscoelastic Oldroyd-B fluid in an open-top porous square box with constant heat flux are investigated. The results show that the increase of relaxation time is able to destabilize the fluid flow leading to a higher heat transfer rate, while the increase of retardation time tends to stabilize the flow and suppress the heat transfer. The flow bifurcation appears earlier with the increase of the relaxation time and the decrease of the retardation time, resulting in more complicated flow patterns in the porous medium.
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页码：639 / 642
页数：3
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