The fluid flow and thermal modeling of oil recovery from a porous medium is studied.A model using steady state 2dimension heat equation s developed.The model is solved by operator splitting and I 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 it was found that the mixing layer thickness ? based on a temperature variation from 0.1 to 0.99 varies as ??pe=constant.