Numerical investigation of effect of turbulator on heat transfer in pipe flows Boru içi akιşlarda türbülatörlerin Ιisι transferine olan etkisinin sayιsal Ιncelenmesi

KAHRAMAN N., SEKMEN U., Ceper B., AKANSU S. O.

Isi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technology, cilt.28, sa.2, ss.51-59, 2008 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Sayı: 2
  • Basım Tarihi: 2008
  • Dergi Adı: Isi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.51-59
  • Anahtar Kelimeler: Turbulator, Winglet, CFD, Heat transfer, TRANSFER ENHANCEMENT, RECTANGULAR BLOCKS, TURBULENT-FLOW, CHANNEL FLOW, SURFACE, EXCHANGERS, FINS, TUBE
  • Erciyes Üniversitesi Adresli: Evet

Özet

In this study, the investigation of three dimensional heat transfer enhancement was investigated numerically by using turbulator which inside the pipe as a turbulence generator produced of stainless steel and two different winglet distances (b= 0.1 and 0.2 m) and with three different winglet angles (θ=30°, 45° and 60°).The flow and temperature fields are computed numerically with the help of the FLUENT computational fluid dynamics (CFD) code. Reynolds Stress Model (RSM) is used as a turbulence model in numerical analyses. In all investigated cases, it was shown that when turbulator used inside pipe, Nu number increased and also heat transfer was effected by winglet distance(b) and winglet angle(θ) of turbulator. While Re number increased, Nu number increases and friction cofficient decreases. © 2008 TIBTD.