Thermal non-equilibrium natural convection in a square enclosure filled with a heat-generating solid phase, non-Darcy porous medium

BAYTAŞ A. C.

International Journal of Energy Research, cilt.27, sa.10, ss.975-988, 2003 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 27 Sayı: 10
  • Basım Tarihi: 2003
  • Doi Numarası: 10.1002/er.929
  • Dergi Adı: International Journal of Energy Research
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.975-988
  • Anahtar Kelimeler: Heat generation, Local thermal non-equilibrium, Microscopy heat transfer, Natural convection, Non-Darcy, Numerical study, Porous media
  • İstanbul Gelişim Üniversitesi Adresli: Evet

Özet

The aim of the present paper is to study the steady state natural convection in a square porous enclosure using a thermal non-equilibrium model for the heat transfer between the fluid and the solid phases. The analysis assumes that the porous medium is homogeneous and isotropic. The present study also assumes the non-Darcy model of natural convection in porous media. It is assumed that the heat generation is only in solid phase. Two dimensional steady convection in a cavity bounded by isothermal walls at constant temperatures has been studied numerically by adopting a two-temperature model of microscopic heat transfer. Such a model, which allows the fluid and solid phases not to be in local thermal equilibrium, is found to modify the flow behaviour and heat transfer rates. Knowledge of this behaviour is very important for the design of the many engineering applications. Copyright © 2003 John Wiley & Sons, Ltd.