EXPERIMENTAL AND NUMERICAL STUDIES ON HEAT TRANSFER AND FLUID FLOW IN A DUCT FITTED WITH INCLINED BAFFLES
El-Askary, W., Abdel-Fattah, A. (2012). EXPERIMENTAL AND NUMERICAL STUDIES ON HEAT TRANSFER AND FLUID FLOW IN A DUCT FITTED WITH INCLINED BAFFLES. EKB Journal Management System, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), 1-28. doi: 10.21608/amme.2012.36977
W. A. El-Askary; A. Abdel-Fattah. "EXPERIMENTAL AND NUMERICAL STUDIES ON HEAT TRANSFER AND FLUID FLOW IN A DUCT FITTED WITH INCLINED BAFFLES". EKB Journal Management System, 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., 2012, 1-28. doi: 10.21608/amme.2012.36977
El-Askary, W., Abdel-Fattah, A. (2012). 'EXPERIMENTAL AND NUMERICAL STUDIES ON HEAT TRANSFER AND FLUID FLOW IN A DUCT FITTED WITH INCLINED BAFFLES', EKB Journal Management System, 15(15th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-28. doi: 10.21608/amme.2012.36977
El-Askary, W., Abdel-Fattah, A. EXPERIMENTAL AND NUMERICAL STUDIES ON HEAT TRANSFER AND FLUID FLOW IN A DUCT FITTED WITH INCLINED BAFFLES. EKB Journal Management System, 2012; 15(15th International Conference on Applied Mechanics and Mechanical Engineering.): 1-28. doi: 10.21608/amme.2012.36977

EXPERIMENTAL AND NUMERICAL STUDIES ON HEAT TRANSFER AND FLUID FLOW IN A DUCT FITTED WITH INCLINED BAFFLES

The International Conference on Applied Mechanics and Mechanical Engineering
Article 54, Volume 15, 15th International Conference on Applied Mechanics and Mechanical Engineering., May 2012, Page 1-28  XML PDF (1.47 MB)
Document Type: Original Article
DOI: 10.21608/amme.2012.36977
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Authors
W. A. El-Askary1; A. Abdel-Fattah2
1Assoc. Professor; Mechanical Power Engineering Dept., Faculty of Engineering, Menoufiya University (Corresponding author), Tel.: +2-01005255817, +2-048-3486965; Fax: +2-048-2235695.
2Mechanical Power Engineering Dept., Faculty of Engineering, Menoufiya University.
Abstract
ABSTRACT
Experimental and numerical studies of heat transfer and the frictional head loss of
turbulent flow in a duct with a heated upper surface are performed in the present
paper. Four different arrangements are considered (case 1: without baffles, case 2:
one perforated baffle on the upper wall and one solid baffle on the lower wall, case 3:
one perforated baffle on the upper wall and one perforated baffle on the lower wall
and case 4: two perforated baffles on the upper wall). A numerical code developed
by the present authors is simultaneously presented including four different
turbulence models; namely: the standard k −e , the modified k −e including
streamline curvature, the renormalization group model (RNG model) and the ¢ − f 2 v
model. The last one shows the best verified results compared with the other models,
so ¢ − f 2 v model is considered in all computations. The presence of baffles
enhanced the heat transfer relative to the smooth-wall duct. Finally, pressure loss
and temperature drop along the test section are employed to evaluate the hydraulic
and thermal performances of the duct at different Reynolds numbers. It is found
experimentally and numerically that the perforation and position of baffles have a
significant effect in the pressure loss and internal cooling of the duct.
Keywords
heat transfer enhancement; turbulent flow; Pressure loss; Rectangular duct flow; Inclined baffle; Numerical simulation
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