Heat transfer with upstream thermal penetration in flow through porous plate passages

被引：6

作者：

Haji-Sheikh, A. ^{[1
]}

Minkowycz, W. J. ^{[2
]}

Manafzadeh, Saeed ^{[2
]}

机构：

[1] Univ Texas Arlington, Dept Mech & Aerosp Engn, Arlington, TX 76019 USA

[2] Univ Illinois, Dept Mech & Ind Engn, Chicago, IL 60602 USA

来源：

APPLIED THERMAL ENGINEERING | 2010年 / 30卷 / 6-7期

关键词：

Heat transfer; Parallel plate ducts; Thermal entrance; Convection; Axial conduction; EXTENDED GRAETZ PROBLEM; DEVELOPING FORCED-CONVECTION; AXIAL CONDUCTION; CIRCULAR TUBE; ENTRANCE REGION; TEMPERATURE; DUCT; FLUX; CHANNEL; WALLS;

D O I：

10.1016/j.applthermaleng.2009.11.011

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The objective of this study is to develop a series solution for determination of the temperature field in parallel-plate ducts with prescribed wall heat flux. Consideration is also given to ducts filled with fluid saturated porous materials. A simple transformation is used to improve the convergence of this series solution. Temperature variations and heat transfer coefficients are determined for infinitely long parallel-plate ducts when the walls undergo a step change in the applied wall heat flux. Axial thermal penetration near the applied wall heat flux location is studied. The solutions with the contribution of axial conduction in these fluid passages are acquired using a modified Graetz-type solution. Finally, this technique is augmented by the contribution of frictional heating. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：639 / 648

页数：10

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