Entropy generation analysis for microscale forced convection with radiation in thermal entrance region

被引：7

作者：

Aghanajafi, Cyrus ^{[1
]}

Bakhtiarpoor, Maziar Alasvand ^{[1
]}

Taghipour, Mehran ^{[1
]}

Mohamadi, Farid ^{[1
]}

机构：

[1] KN Toosi Univ, Dept Mech Engn, Tehran, Iran

来源：

HEAT AND MASS TRANSFER | 2015年 / 51卷 / 03期

关键词：

2ND LAW ANALYSIS; VISCOUS DISSIPATION; HEAT-TRANSFER; 2ND-LAW ANALYSIS; DUCT; FLOW; SLIP;

D O I：

10.1007/s00231-014-1398-x

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper the effects of radiation and dissipation in the entropy generation in microtube is evaluated. Governing equations are solved with analytically solution. Fluid flow in the entrance area is laminar and independent of time, and radiation is also a fluid property. Results in this paper extracted with dimensionless numbers Knudsen (k (n) ), Brinkman (Br) and Prandtl (Pr) that compared with the case without radiation. It is shown that entropy generation decreases with increasing Knudsen number. It can be observed that increasing Br augments the entropy generation.

引用

页码：307 / 312

页数：6

共 19 条

[1]

[Anonymous], 2004, Entropy, DOI DOI 10.3390/E6050413

[2] Second-law analysis of heat and fluid flow in microscale geometries [J].