A numerical study of single-phase convective heat transfer in microtubes for slip flow

Sun W., Kakac S., Yazicioglu A.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, cilt.46, sa.11, ss.1084-1094, 2007 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 46 Sayı: 11
  • Basım Tarihi: 2007
  • Doi Numarası: 10.1016/j.ijthermalsci.2007.01.020
  • Dergi Adı: INTERNATIONAL JOURNAL OF THERMAL SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1084-1094
  • Anahtar Kelimeler: microscale heat transfer, microtubes, slip flow
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The steady-state convective heat transfer for laminar, two-dimensional, incompressible rarefied gas flow in the thermal entrance region of a tube under constant wall temperature, constant wall heat flux, and linear variation of wall temperature boundary conditions are investigated by the finite-volume finite difference scheme with slip flow and temperature jump conditions. Viscous heating is also included, and the solutions are compared with theoretical results where viscous heating has been neglected. For these three boundary conditions for a given Brinkman number, viscous effects are presented in the thermal entrance region along the channel. The effects of Knudsen and Brinkman numbers on Nusselt number are presented in graphical and tabular forms in the thermal entrance region and under fully developed conditions. (c) 2007 Elsevier Masson SAS. All rights reserved.