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Entropy generation in dissipative flow of Williamson fluid between two rotating disks
Qayyum, Sumaira1; Khan, M. Ijaz1; Hayat, T.1,2; Alsaedi, A.2; Tamoor, M.3
2018-12-01
Source PublicationINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN0017-9310
Volume127Pages:933-942
Abstract

This communication addresses flow characteristics of Williamson fluid between two rotating disks. Electrically conducting fluid is considered. Total entropy generation rate is calculated through implementation of second law of thermodynamics. The lower and upper disks have different stretching rates and angular velocities for rotation. Characteristics of heat transport are expressed through dissipation, heat generation/absorption and thermal radiation. Von Karman transformations are utilized to convert the dimensional flow expressions into dimensionless form. Convergent series solutions are constructed. Influence of different pertinent variables on velocity, temperature, entropy number, skin friction coefficients and Nusselt numbers are studied. It is observed that the axial and tangential velocities increase for higher Weissenberg number while radial velocity decays. Further entropy number remarkably increases for magnetic, radiation and Brinkman number. Bejan number is less for higher magnetic parameter, stretching parameter, Brinkman number and Weissenberg number. (C) 2018 Elsevier Ltd. All rights reserved.

KeywordDouble Rotating Disks Entropy Generation Williamson Fluid Viscous Dissipation Thermal Radiation Heat Generation/absorption
DOI10.1016/j.ijheatmasstransfer.2018.08.034
Language英语
WOS KeywordHomogeneous-heterogeneous Reactions ; Christov Heat-flux ; Convective Boundary-conditions ; Stagnation Point Flow ; Mixed Convection ; Thermal-radiation ; Carbon Nanotubes ; Viscous Dissipation ; Activation-energy ; Mhd Flow
WOS Research AreaThermodynamics ; Engineering ; Mechanics
WOS SubjectThermodynamics ; Engineering, Mechanical ; Mechanics
WOS IDWOS:000445984500082
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26193
Collection中国科学院过程工程研究所
Corresponding AuthorKhan, M. Ijaz
Affiliation1.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.Univ Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Qayyum, Sumaira,Khan, M. Ijaz,Hayat, T.,et al. Entropy generation in dissipative flow of Williamson fluid between two rotating disks[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2018,127:933-942.
APA Qayyum, Sumaira,Khan, M. Ijaz,Hayat, T.,Alsaedi, A.,&Tamoor, M..(2018).Entropy generation in dissipative flow of Williamson fluid between two rotating disks.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,127,933-942.
MLA Qayyum, Sumaira,et al."Entropy generation in dissipative flow of Williamson fluid between two rotating disks".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 127(2018):933-942.
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