International Journal of Mathematics and Mathematical Sciences
Volume 15 (1992), Issue 4, Pages 789-794

Darcy-Brinkman free convection about a wedge and a cone subjected to a mixed thermal boundary condition

G. Ramanaiah and V. Kumaran

Department of Mathematics, Anna University, Madras 600 025, India

Received 29 January 1991; Revised 26 July 1991

Copyright © 1992 G. Ramanaiah and V. Kumaran. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The Darcy-Brinkman free convection near a wedge and a cone in a porous medium with high porosity has been considered. The surfaces are subjected to a mixed thermal boundary condition characterized by a parameter m; m=0, 1, correspond to the cases of prescribed temperature, prescribed heat flux and prescribed heat transfer coefficient respectively. It is shown that the solutions for different m are dependent and a transformation group has been found, through which one can get solution for any m provided solution for a particular value of m is known. The effects of Darcy number on skin friction and rate of heat transfer are analyzed.