In our earlier papers we have presented a general algorithm for the solutio
n of both compressible and incompressible Navier-Stokes equations. The obje
ctive of the present work is to show the performance of this algorithm when
it is used to solve thermal now problems. Both natural and forced convecti
on and transient problems are considered in this study. The semi-implicit f
orm of the algorithm has been used to deal with a variety of these problems
.