Entropy generation on mhd flow of Powell-Eyring fluid between radially stretching rotating disk with diffusion-thermo and thermo-diffusion effects

• Autorzy: Khan N. A. , Aziz S. , Ullah S.

Identyfikatory

DOI

10.1515/ama-2017-0004

• Języki publikacji: EN

Abstrakty

EN

An investigation is performed for an alyzing the effect of entropy generation on the steady, laminar, axisymmetric flow of an incompressible Powell-Eyring fluid. The flow is considered in the presence of vertically applied magnetic field between radially stretching rotating disks. The Energy and concentration equation is taking into account to investigate the heat dissipation, Soret, Dufour and Joule heating effects. To describe the considered flow non-dimensionalized equations, an exact similarity function is used to reduce a set of the partial differential equation into a system of non-linear coupled ordinary differential equation with the associated boundary conditions. Using homotopy analysis method (HAM), an analytic solution for velocity, temperature and concentration profiles are obtained over the entire range of the imperative parameters. The velocity components, concentration and temperature field are used to determine the entropy generation. Plots illustrate important results on the effect of physical flow parameters. Results obtained by means of HAM are then compared with the results obtained by using optimized homotopy analysis method (OHAM). They are in very good agreement.

Słowa kluczowe

EN

axisymmetric flow; entropy generation; stretching disk; Powell-Eyring fluid; diffusion

• Wydawca: Oficyna Wydawnicza Politechniki Białostockiej
• Czasopismo: Acta Mechanica et Automatica
• Rocznik: 2017
• Tom: Vol. 11, no. 1
• Strony: 20--32
• Opis fizyczny: Bibliogr. 44 poz., rys., wykr.

Twórcy

autor

Khan N. A.

• Department of Mathematics, University of Karachi, Karachi 75270, Pakistan

autor

Aziz S.

• Department of Mathematics, University of Karachi, Karachi 75270, Pakistan

autor

Ullah S.

• Department of Mathematics, Government College University Lahore, 54000, Pakistan

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)