NUMERICAL INVESTIGATION OF EFFECT OF TURBULATOR ON HEAT TRANSFER IN PIPE FLOWS


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

ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY, cilt.28, ss.51-59, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 28 Konu: 2
  • Basım Tarihi: 2008
  • Dergi Adı: ISI BILIMI VE TEKNIGI DERGISI-JOURNAL OF THERMAL SCIENCE AND TECHNOLOGY
  • Sayfa Sayıları: ss.51-59

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 (theta=30 degrees, 45 degrees and 60 degrees).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(theta) of turbulator. While Re number increased, Nu number increases and friction cofficient decreases.