THERMAL SCIENCE

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Faiza A. Salama

EFFECTS OF RADIATION ON CONVECTION HEAT TRANSFER OF CU-WATER NANOFLUID PAST A MOVING WEDGE

ABSTRACT
Heat transfer characteristics of a two-dimensional steady hydrodynamic flow of water-based copper(Cu) nanofluid over a moving wedge, taking into account the effects of thermal radiation, have been investigated numerically. The Rosseland approximation is used to describe the radiative heat flux in the energy equation. The governing fundamental equations are first transformed into a system of ordinary differential equations and solved numerically by using the fourth-order Runge-kutta method with shooting technique. A comparison with previously published work has been carried out and the results are found to be in good agreement. The existence of unique and dual solutions for self-similar equations of the flow and heat transfer are analyzed numerically. The results indicate that there is strong dependence of the thermal gradient at the surface of the wedge on both velocity ratio parameter and thermal radiation.
KEYWORDS
nanofluid, dual solution. thermal radiation
PAPER SUBMITTED: 2014-07-19
PAPER REVISED: 2014-12-22
PAPER ACCEPTED: 2015-04-09
PUBLISHED ONLINE: 2015-05-03
DOI REFERENCE: https://doi.org/10.2298/TSCI140719049S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 2, PAGES [437 - 447]
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Effects of radiation on convection heat transfer of Cu-water nanofluid past a moving wedge

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