TY - JOUR
TI - Effect of thermal radiation on unsteady mixed convection flow near forward stagnation point over a cylinder of elliptic cross section
AU - Javed Tariq
AU - Mustafa Irfan
AU - Ahmad Hussain
JN - Thermal Science
PY - 2017
VL - 21
IS - 1
SP - 243
EP - 254
PT - Article
AB - 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 qw and blunt/slender orientation parameter w 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.