Turbulent heat transfer in a swirl flow downstream of an abrupt pipe expansion
Abstract
Calculations of the flow and heat transfer of a swirling turbulent flow after a sudden pipe expansion are reported. The calculations were obtained by the numerical solution with a kepsilon turbulence model including a modification to account for effects of streamline curvature. The predicted effects of varying the swirl number from zero to one on the heat transfer behavior are presented for a range of Prandtl numbers from 0.7 to 10. The expected effects of the swirl on the velocity and temperature fields are also reported. The results predict, for example, that the maximum Nusselt number is increased as the swirl number increases and its position moves towards the inlet section. They also show an increase in the Nusselt number as the Prandtl number increases.
 Publication:

Heat Transfer 1982, Volume 3
 Pub Date:
 1982
 Bibcode:
 1982hetr....3..159H
 Keywords:

 Computational Fluid Dynamics;
 Pipe Flow;
 Swirling;
 Turbulent Flow;
 Turbulent Heat Transfer;
 KEpsilon Turbulence Model;
 Nusselt Number;
 Prandtl Number;
 Shear Stress;
 Temperature Distribution;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer