THERMAL SCIENCE

International Scientific Journal

Mohammad Mehdi Rashidi

,

Muhammad Ashraf

,

Behnam Rostami

,

Mohammad Taher Rastegari

,

Sumra Bashir

MIXED CONVECTION BOUNDARY-LAYER FLOW OF A MICRO POLAR FLUID TOWARDS A HEATED SHRINKING SHEET BY HOMOTOPY ANALYSIS METHOD

ABSTRACT
A comprehensive study of two dimensional stagnation flow of an incompressible micro polar fluid with heat transfer characteristics towards a heated shrinking sheet is analyzed analytically. The main goal of this paper is to find the analytic solutions using a powerful technique namely the Homotopy Analysis Method (HAM) for the velocity and the temperature distributions and to study the steady mixed convection in two-dimensional stagnation flows of a micro polar fluid around a vertical shrinking sheet. The governing equations of motion together with the associated boundary conditions are first reduced to a set of self-similar nonlinear ordinary differential equations using a similarity transformation and are then solved by the HAM. Some important features of the flow and heat transfer for the different values of the governing parameters are analyzed, discussed and presented through tables and graphs. The heat transfer from the sheet to the fluid decreases with an increase in the shrinking rate. Micro polar fluids exhibit a reduction in shear stresses and heat transfer rate as compared to Newtonian fluids, which may be beneficial in flow and thermal control of polymeric processing.
KEYWORDS
stagnation flow, heat transfer, micro polar fluid, shrinking sheet
PAPER SUBMITTED: 2013-02-12
PAPER REVISED: 2013-06-23
PAPER ACCEPTED: 2013-06-23
PUBLISHED ONLINE: 2013-07-06
DOI REFERENCE: https://doi.org/10.2298/TSCI130212096R
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 1, PAGES [21 - 34]
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Mixed convection boundary-layer flow of a micro polar fluid towards a heated shrinking sheet by homotopy analysis method

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