An analytical study on the entropy generation in flow of a generalized Newtonian fluid

AKSOY Y., Gurkan N., AKSOY A. B., DOĞAN DURGUN D., YURDDAŞ A.

Thermal Science, cilt.23, 2019 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 23
  • Basım Tarihi: 2019
  • Doi Numarası: 10.2298/tsci190701360a
  • Dergi Adı: Thermal Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Anahtar Kelimeler: Entropy generation, Generalized newtonian fluid, Heat transfer, Perturbation methods
  • Manisa Celal Bayar Üniversitesi Adresli: Evet

Özet

In this study, an analytical investigation on pressure driven flow of Powell-Eyring fluid is conducted to understand the irreversibilities due to heat transfer and viscous heating. The flow between infinitely long parallel plates is considered as fully developed and laminar with constant properties and subjected to symmetrical heat fluxes from solid boundaries. The internal heating due to viscous friction accompanies external heat transfer, that is, viscous dissipation term is to be involved in the energy equation. As a cross-check, accuracy of analytical solutions is confirmed by a predictor-corrector numerical scheme with variable step size.