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, cilt.29, ss.971-982, 2002 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 29 Konu: 7
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1016/s0735-1933(02)00417-7
  • Dergi Adı: INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
  • Sayfa Sayıları: ss.971-982

Özet

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.