The opposing effect of viscous dissipation allows for a parallel free convection boundary-layer flow along a cold vertical flat plate

被引：17

作者：

Magyari, E ^{[1
]}

Keller, B ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Swiss Fed Inst Technol, Inst Bldg Technol, Chair Phys Bldg, CH-8093 Zurich, Switzerland

来源：

TRANSPORT IN POROUS MEDIA | 2003年 / 51卷 / 02期

关键词：

free convection; viscous dissipation; boundary-layer; Gebhart number; exact solution; algebraic decay;

D O I：

10.1023/A:1021998515551

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

External free convection boundary-layer flows are usually treated by neglecting the effect of viscous dissipation. This assumption always results in a non-parallel flow, besides a strong parallel component also a weak transversal component of the (steady) velocity field occurs. The present paper shows, however, that the weak opposing effect of the buoyancy forces due to heat release by viscous dissipation, can give rise along a cold vertical plate adjacent to a fluid saturated porous medium to a strictly parallel steady free convection flow. This boundary-layer flow is described by an algebraically decaying exact analytical solution of the basic balance equations.

引用

页码：227 / 230

页数：4

共 8 条

[1]

BEJAN A, 1995, CONVENCTIONHEAT TRAN

[2] ON THERMAL EQUATION FOR FLOW IN POROUS-MEDIA [J].