Entropy generation for pipe flow of a third grade fluid with Vogel model viscosity

Pakdemirli M., Yilbas B.

International Journal of Non-Linear Mechanics, cilt.41, sa.3, ss.432-437, 2006 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 41 Sayı: 3
  • Basım Tarihi: 2006
  • Doi Numarası: 10.1016/j.ijnonlinmec.2005.09.002
  • Dergi Adı: International Journal of Non-Linear Mechanics
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.432-437
  • Anahtar Kelimeler: non-Newtonian fluid, pipe flow, third grade fluid, entropy, Vogel model
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

The flow of fluid-solid mixtures in a pipe can be treated as non-Newtonian fluids of third grade. Depending upon the fluid viscosity, entropy generation in the flow system varies. In the present study, flow of third grade fluid in a pipe is considered. The Vogel model is introduced to account for the temperature-dependent viscosity. Entropy generation due to fluid friction and heat transfer in the flow system is formulated. The influence of viscosity parameters A and B on the entropy generation number is investigated. It is found that increasing viscosity parameter A reduces the entropy generation number and opposite is true for increasing viscosity parameter B. © 2005 Elsevier Ltd. All rights reserved.