Salient aspects of thermo-diffusion and diffusion thermo on unsteady dissipative flow with entropy generation

被引：19
作者：
Hayat, T. [1 ,2 ]
Sajjad, Lahiba [1 ]
Khan, M. Ijaz [1 ]
Khan, M. Imran [3 ]
Alsaedi, A. [2 ]
机构：
[1] Quaid I Azam Univ, Dept Math, Islamabad 45320, Pakistan
[2] King Abdulaziz Univ, Fac Sci, Dept Math, NAAM Res Grp, POB 80257, Jeddah 21589, Saudi Arabia
[3] Univ Portsmouth, Sch Engn, Winston Churchill Ave, Portsmouth PO1 2UP, Hants, England
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2019年 / 282卷
关键词：
Unsteady flow; Entropy generation; Thermo-diffusion and diffusion thermo effect; Activation energy; Viscous dissipation; STAGNATION POINT FLOW; ARRHENIUS ACTIVATION-ENERGY; CHRISTOV HEAT-FLUX; CARREAU-NANOFLUID; CHEMICAL-REACTION; CONVECTIVE FLOW; MAGNETIC-FIELD; RADIATIVE FLOW; ROTATING-DISK; MHD FLOW;
D O I：
10.1016/j.molliq.2019.02.072
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：
Present research addresses entropy generation in unsteady flow of viscous material. Flow by a stretchable rotating disk is examined. Applied magnetic field is considered. Energy equation consists of viscous dissipation and thermo-diffusion and diffusion thermo effects. Chemical reaction with activation energy is implemented. Through implementation of second law of thermodynamics the total irreversibility rate is calculated. Mathematical expressions for residual errors are presented. Convergent series solutions by homotopic procedure are developed. Influences of pertinent variables for velocity, entropy generation, temperature, Bejan number and concentration fields are arranged. Moreover the computational analysis of skin friction coefficient and Nusselt number is presented in Tables 2 and 3. It is concluded that entropy generation and Bejan number show opposite impact versus Brinkman number. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：557 / 565
页数：9
相关论文
共 65 条
[1]   Magnetohydrodynamic Ferro-Nano fluid flow in a semi-porous curved tube under the effect of hall current and nonlinear thermal radiative [J].
Abdel-wahed, Mohamed S. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2019, 474 :347-354
[2]  
Ahmad S, 2018, RESULTS PHYS, V8, P1250, DOI [10.1016/j.rinp.2018.01.043, 10.1016/j.rinp.2018.04.015]
[3]   Entropy generation optimization and unsteady squeezing flow of viscous fluid with five different shapes of nanoparticles [J].
Ahmad, Salman ;
Khan, Muhammad Ijaz ;
Hayat, Tasawar ;
Khan, Muhammad Imran ;
Alsaedi, Ahmed .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2018, 554 :197-210
[4]   Entropy generation under the effect of suction/injection [J].
Ajibade, Abiodun O. ;
Jha, Basant K. ;
Omame, Andrew .
APPLIED MATHEMATICAL MODELLING, 2011, 35 (09) :4630-4646
[5]  
Alsaedi A., 2017, J THEOR COMPUT CHEM, V16
[6]   Dual exact solutions of graphene-water nanofluid flow over stretching/shrinking sheet with suction/injection and heat source/sink: Critical values and regions with stability [J].
Aly, Emad H. .
POWDER TECHNOLOGY, 2019, 342 :528-544
[7]  
[Anonymous], 2016, ENTROPY SWITZ, DOI [DOI 10.3390/E18060224, DOI 10.3390/e18060224]
[8]   A performance analysis of vertical steam generator using an entropy generation method [J].
Bahmanyar, M. E. ;
Talebi, S. .
ANNALS OF NUCLEAR ENERGY, 2019, 125 :212-221
[9]   A robust numerical method for solving stagnation point flow over a permeable shrinking sheet under the influence of MHD [J].
Bhatti, M. M. ;
Abbas, M. Ali ;
Rashidi, M. M. .
APPLIED MATHEMATICS AND COMPUTATION, 2018, 316 :381-389
[10]   Effects of thermo-diffusion and thermal radiation on Williamson nanofluid over a porous shrinking/stretching sheet [J].
Bhatti, M. M. ;
Rashidi, M. M. .
JOURNAL OF MOLECULAR LIQUIDS, 2016, 221 :567-573
1234567