TURBULENT NATURAL CONVECTION IN A COMPOSITE ENCLOSURE USING THE THERMAL NON-EQUILIBRIUM MODEL

被引：0
|
作者：
deLemos, Marcelo J. S. [1 ]
Masciarelli, Caio B. [1 ]
机构：
[1] ITA, Dept Energia IEME, BR-12228900 Sao Jose Dos Campos, SP, Brazil
来源：
PROCEEDINGS OF THE ASME SUMMER HEAT TRANSFER CONFERENCE, 2016, VOL 1 | 2016年
关键词：
HEAT-TRANSFER; FLOW;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Turbulent natural convection in a two-dimensional horizontal composite square cavity is numerically analyzed using the finite volume method and the thermal non-equilibrium approach. Distinct energy equations for the working fluid and for the porous matrix are proposed reflecting different energy balances for each phase. The composite square cavity is formed by three distinct regions, namely, deaf, porous and solid region. It was found that the fluid begins to permeate the porous medium for values of Ra greater than 10(boolean AND)6. Nusselt number values show that for the range of Ra analyzed there are no significant variation between the laminar and turbulent model solution. When comparing the effects of Ra and Da on Nu, results indicate that the solid phase properties have a greater influence in enhancing the overall heat transferred trough the cavity.
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页数：7
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