Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheet

A numerical model is presented to study the effects of temperature-dependent viscosity and variable thermal conductivity on mixed convection problem. Two important types of wall heating conditions namely, prescribed surface temperature and prescribed wall heat flux which arise in polymer industries...

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Main Authors: Dulal Pal, Hiranmoy Mondal
Format: Article
Language:English
Published: SpringerOpen 2014-04-01
Series:Journal of the Egyptian Mathematical Society
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1110256X13000679
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author Dulal Pal
Hiranmoy Mondal
author_facet Dulal Pal
Hiranmoy Mondal
author_sort Dulal Pal
collection DOAJ
description A numerical model is presented to study the effects of temperature-dependent viscosity and variable thermal conductivity on mixed convection problem. Two important types of wall heating conditions namely, prescribed surface temperature and prescribed wall heat flux which arise in polymer industries are considered. The problem is solved numerically by using the fifth-order Runge–Kutta Fehlberg method with shooting technique. It is found that the Prandtl number is to decrease the skin friction coefficient, local Nusselt number and local Sherwood number. The effects of non-uniform heat source/sink and porous parameter are analyzed on velocity, temperature, skin friction co-efficient, Nusselt and Sherwood numbers.
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spelling doaj.art-dd5644b61ffa40e1a88f15d36ea7149c2022-12-21T20:04:53ZengSpringerOpenJournal of the Egyptian Mathematical Society1110-256X2014-04-0122112313310.1016/j.joems.2013.05.010Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheetDulal Pal0Hiranmoy Mondal1Department of Mathematics, Siksha-Bhavana, Visva-Bharati University, Santiniketan, West Bengal 731 235, IndiaDepartment of Mathematics, Bengal Institute of Technology and Management, Santiniketan, West Bengal 731 236, IndiaA numerical model is presented to study the effects of temperature-dependent viscosity and variable thermal conductivity on mixed convection problem. Two important types of wall heating conditions namely, prescribed surface temperature and prescribed wall heat flux which arise in polymer industries are considered. The problem is solved numerically by using the fifth-order Runge–Kutta Fehlberg method with shooting technique. It is found that the Prandtl number is to decrease the skin friction coefficient, local Nusselt number and local Sherwood number. The effects of non-uniform heat source/sink and porous parameter are analyzed on velocity, temperature, skin friction co-efficient, Nusselt and Sherwood numbers.http://www.sciencedirect.com/science/article/pii/S1110256X13000679Boundary layer flowHeat transferStretching surfaceOhmic heatingNon-Darcy flow
spellingShingle Dulal Pal
Hiranmoy Mondal
Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheet
Journal of the Egyptian Mathematical Society
Boundary layer flow
Heat transfer
Stretching surface
Ohmic heating
Non-Darcy flow
title Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheet
title_full Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheet
title_fullStr Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheet
title_full_unstemmed Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheet
title_short Effects of temperature-dependent viscosity and variable thermal conductivity on MHD non-Darcy mixed convective diffusion of species over a stretching sheet
title_sort effects of temperature dependent viscosity and variable thermal conductivity on mhd non darcy mixed convective diffusion of species over a stretching sheet
topic Boundary layer flow
Heat transfer
Stretching surface
Ohmic heating
Non-Darcy flow
url http://www.sciencedirect.com/science/article/pii/S1110256X13000679
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