Control of heat transfer and fluid flow using a triangular bar in heated blocks located in a channel

ÖZTOP H. F., VAROL Y., ALNAK D. E.

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, cilt.36, sa.8, ss.878-885, 2009 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36 Sayı: 8
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.icheatmasstransfer.2009.05.006
  • Dergi Adı: INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.878-885
  • Anahtar Kelimeler: Heat transfer, Triangular bar, Heated block, TRANSFER ENHANCEMENT, MIXED CONVECTION, VORTEX GENERATORS, PLANE CHANNEL, DUCT, PRISM
  • Sivas Cumhuriyet Üniversitesi Adresli: Evet

Özet

Control of laminar, two-dimensional, steady forced convection heat transfer and fluid flow in an isothermally heated blocks located in a channel was analyzed numerically. The channel had three blocks attached on its bottom wall. The cooling air entered the channel with uniform velocity. A triangular cross-sectional bar was used as a control element. Both the top wall of the channel and the bar were isothermal. The bar was located in two different points in the y-direction and these parameters were tested at three different Reynolds numbers ranging between (400 <= Re <= 1300). Results were also compared for no triangle case. It was obtained that insertion of a triangular cross-sectional bar enhanced the heat transfer for all Reynolds numbers and the best heat transfer was observed for the position of the bar with y = 3.5. (C) 2009 Elsevier Ltd. All rights reserved.