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Heat transfer and friction behaviors in rectangular Duct with Two Different Ribs


Author(s):

SANDEEP KUMAR KAROLE , SCOPE COLLAGE OF ENGG. BHOPAL; ISHWAR SINGH, SCOPE COLLAGE OF ENGG. BHOPAL; PANKAJ SONKUSARE, SHRI BALA JI INSTITUTE TECHNOLOGY AND MANAGEMENT

Keywords:

CFD, Friction Factor, Forced convection, Heat transfer, internal flow, Pressure Drop

Abstract:

Computational study was carried out to determine heat transfer and friction factors for turbulent flow through rectangular ducts with reveres pentagonal shape at same height, reveres pentagonal shape at uniformly varying height, Triangular shape at same height, Triangular shape at uniformly varying height . A commercial finite volume package ANSYS FLUENT 14.5 is used to analyze and visualize the nature of the flow across the ribbed duct. The fluid in the duct was air, and the heat transfer and friction factor were determined by measuring the overall heat transfer coefficients of the duct. To attain fully developed conditions at the entrance and exit. The walls of the air side were ribbed with an array of short ribs. The other wall of the duct was well insulated and can be considered adiabatic. The results are presented in dimensionless form, in terms of Nusselt numbers and friction factors as functions of the Reynolds number. It was found that the reveres pentagonal rib shape at same height and reveres pentagonal ribs shape at uniformly varying height increase both the heat transfer and the pressure drop compared with a smooth duct. And It was found that the Triangular shape at same height, Triangular shape at uniformly varying height increase both the heat transfer and the pressure drop compared with a smooth duct. Compare to both cases is best of the Triangular shape at uniformly varying height.


Other Details:

Manuscript Id :IJSTEV1I9020
Published in :Volume : 1, Issue : 9
Publication Date: 01/04/2015
Page(s): 56-62
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