Heat transfer and entropy generation in a pipe flow with temperature dependent viscosity and convective cooling

被引：0
|
作者：
Tshehla, M. S. [1 ]
Makinde, O. D. [2 ]
Okecha, G. E. [3 ]
机构：
[1] Univ Stellenbosch, Fac Mil Sci, Dept Math, ZA-7395 Saldanha, South Africa
[2] Cape Peninsula Univ Technol, Fac Engn, ZA-7535 Bellville, South Africa
[3] Univ Ft Hare, Dept Math & Appl Math, ZA-5700 Alice, South Africa
来源：
SCIENTIFIC RESEARCH AND ESSAYS | 2010年 / 5卷 / 23期
关键词：
Pipe flow; variable viscosity; convective cooling; irreversibility analysis; VARIABLE-VISCOSITY; IRREVERSIBILITY ANALYSIS; CHANNEL FLOW; FLUID;
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The second law analysis is performed to study the entropy generation rate in a variable viscosity liquid flowing steadily through a cylindrical pipe with convective cooling at the pipe surface. The system is assumed to exchange heat with the ambient following Newton's cooling law and the fluid viscosity model varies as an inverse linear function of temperature. The analytical expressions for fluid velocity and temperature that were derived essentially expedite the expressions for volumetric entropy generation of numbers, irreversibility distribution ratio and the Bejan number in the flow field.
引用
收藏
页码：3730 / 3741
页数：12
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