Entropy analysis of laminar-forced convection in a pipe with wall roughness


Ozalp A. A.

INTERNATIONAL JOURNAL OF EXERGY, cilt.6, sa.2, ss.249-275, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 6 Sayı: 2
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1504/ijex.2009.024001
  • Dergi Adı: INTERNATIONAL JOURNAL OF EXERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.249-275
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

Momentum and heat transfer rates, as well as entropy generation have been numerically investigated for fully developed, forced convection, laminar flow in a micro-pipe. Compressible and variable fluid property continuity, Navier-Stokes and energy equations are solved for various Reynolds number, constant heat flux and surface roughness cases; entropy generation is discussed in conjunction with the velocity and temperature profiles, boundary layer parameters and heat transfer-frictional characteristics of the pipe flow. Simulations concentrated on the impact of wall roughness based viscous dissipation on the heat transfer behaviour and so occurring heating/cooling activity and the resulting overall and radial entropy generation.