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

Pakdemirli M., Yilbas B.

International Journal of Non-Linear Mechanics, vol.41, no.3, pp.432-437, 2006 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 3
  • Publication Date: 2006
  • Doi Number: 10.1016/j.ijnonlinmec.2005.09.002
  • Journal Name: International Journal of Non-Linear Mechanics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.432-437
  • Keywords: non-Newtonian fluid, pipe flow, third grade fluid, entropy, Vogel model
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

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.