JME_V2_N1_RP5 Prabhu S.M. Abbas Mohaideen Journal on Mechanical Engineering 2249 - 0744 2 1 35 44 Secondary Recovery, Enhanced Oil Drillinglap wind Schime, Operator Splitting The fluid flow and thermal modeling of oil recovery from a porous medium is studied. A model using steady state 2dimension heat equations are developed. The model is solved by operator splitting and 1 order upwind schemes. A thermal mixing layer forms at interface of the two streams in which the temperature changes gradually from 0 to ¥.The thickness of this layer grows in the downstream direction. At high peclet numbers, the mixing layer is thin and the temperature is not continuous. If Pe->0,the mixing layer spreads quickly to touch the boundaries for the fully evolved mixing layer. Finally, it was found that the mixing layer thickness d based on a temperature variation from 0.1 to 0.99 varies as delta multiply by root of pe=constant. November 2011 - January 2012 Copyright © 2012 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=1553