Investigation of Sisko fluid through entropy generation

被引：64
作者：
Khan, Muhammad Ijaz [1 ]
Qayyum, Sumaira [1 ]
Hayat, Tasawar [1 ,2 ]
Alsaedi, Ahmed [2 ]
Khan, Muhammad Imran [3 ]
机构：
[1] Quaid I Azam Univ, Dept Math, Islamabad 44000, Pakistan
[2] King Abdulaziz Univ, Fac Sci, Dept Math, NAAM Res Grp, Jeddah 21589, Saudi Arabia
[3] Heriot Watt Univ, Edinburgh Campus, Edinburgh EH14 4AS, Midlothian, Scotland
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2018年 / 257卷
关键词：
Sisko fluid model; Entropy generation; Nonlinear thermal radiation; Joule heating and Viscous dissipation; Heat generation/absorption; Convective boundary conditions; STAGNATION POINT FLOW; CHRISTOV HEAT-FLUX; STATISTICAL DECLARATION; PROBABLE-ERROR; MINIMIZATION; SURFACE; IMPACT; NEEDLE; COPPER; SILVER;
D O I：
10.1016/j.molliq.2018.02.087
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In present paper boundary layer flow of Sisko fluid by stretching sheet is examined. Combined effects of nonlinear thermal radiation, heat generation/absorption, Joule heating are discussed. The main purpose is to analyze the entropy generation in Sisko fluid flow. By using suitable similarity variables modeled boundary layer PDE's are transfigured into ODE's. The obtained system of equations are solved by using analytical technique (HAM). Graphs are developed to show the effects of pertinent parameters on velocity, temperature, entropy generation, Bejan number, skin friction and Nusselt number. Velocity for larger material parameter reduces. Temperature is more for greater Biot number and radiation parameter. Bejan number is maximum away from the sheet for shear thickening fluids and approaches to zero for shear thinning fluids. (C) 2018 Published by Elsevier B.V.
引用
收藏
页码：155 / 163
页数：9
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