Abstract: Flow through pipe is observed at many places in everyday life. To understand the effect of velocity and temperature profile on such flows, many researchers performed experiments and estimated empirical relations which explain the flow effectively. In the present work primary focus is on the viability of results obtained from CFD analysis and compared those with numerical calculations. It is observed that assumptions considered during formulation need to be followed carefully. The realizable k-e turbulent model found more appropriate than standard k-e turbulence model for flow through pipe.