EFFECT OF THERMAL RADIATION ON UNSTEADY MIXED CONVECTION FLOW NEAR FORWARD STAGNATION POINT OVER A CYLINDER OF ELLIPTIC CROSS SECTION

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Tariq JAVED Irfan MUSTAFA Hussain AHMAD

Abstract

: The effect of thermal radiation on unsteady mixed convection flow near a forward stagnation point over a cylinder of elliptic cross section is investigated in this paper. The governing equations are transformed into dimensionless partial differential equations by using a suitable transformation and then are solved numerically by using an implicit finite difference scheme known as Keller Box method. The accuracy of the results is verified by comparing the obtained results with the previous studies available in the literature. It is shown that the results are highly accurate and are in good agreement. The separation times for both blunt and slender orientations in the presence of thermal radiation are shown in tabular forms. Moreover, the effects of pertinent parameters including Prandtl number Pr, mixed convection parameter λ, thermal radiation parameter Rd, surface temperature parameter θw and blunt/slender orientation parameter ω on the velocity profile, the temperature profile and the Nusselt number are shown graphically. From the present study, it is observed that boundary layer separation occurs early due to thermal radiation and Nusselt number increases for both blunt and slender orientations.

Article Details

How to Cite
JAVED, Tariq; MUSTAFA, Irfan; AHMAD, Hussain. EFFECT OF THERMAL RADIATION ON UNSTEADY MIXED CONVECTION FLOW NEAR FORWARD STAGNATION POINT OVER A CYLINDER OF ELLIPTIC CROSS SECTION. Thermal Science, [S.l.], mar. 2017. ISSN 2334-7163. Available at: <http://thermal-science.tech/journal/index.php/thsci/article/view/2089>. Date accessed: 14 dec. 2017. doi: https://doi.org/10.2298/TSCI140926027J.
Section
Articles
Received 2017-03-01
Accepted 2017-03-13
Published 2017-03-13

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