Heat transfer of a non-newtonian viscoinelastic fluid in an axisymmetric channel with a porous wall for turbine cooling application

Kurtcebe C., Erim M.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, vol.29, no.7, pp.971-982, 2002 (SCI-Expanded) identifier identifier


In the present paper, 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. It is found that increasing the cross viscosity parameter K decreases the wall friction parameter f"(0) and increases the Nusselt number. (C) 2002 Elsevier Science Ltd.