HEAT TRANSFER OF NON-NEWTONIAN VISCOINELASTIC FLUID IN AN AXISYMMETRIC CHANNEL WITH A POROUS WALL FOR TURBINE COOLING APPLICATION

Abstract

A method for cooling turbine disks with a non-newtonian viscoinelastic fluid is analyzed. The velocity and temperature fields are obtained numerically by applying a perturbation method and the Nusselt number is determined as a function of the cross viscosity parameter K, the Reynolds number Re, and the Prandtl number Pr