The convective heat transfer performance of converging-diverging plate channels with fin-wall perforations is computationally modeled. Covering a Reynolds Number range of 10 < Re < 1000 for air (Pr = 0.72) flows, a parametric study of the effect of the two dimensional duct geometry, which has symmetric fin wall corrugations of trapezoidal profile, are considered. The geometric variables are described by the divergent-plane’s inclination angle φ and the convergent-divergent amplitude ratio α. The wall perforations are modeled as uniformly distributed equi-size thin slots so as to render a porosity (ratio of perforated are to total surface area) β of 10% on the fin surface. The fin-wall transpiration (fluid injection in the divergent section and fluid suction in the convergent section) is seen to promote enhanced convective heat transfer by inducing cross stream mixing and periodic disruption of the boundary layer. As a result, the thermal-hydraulic performance is found to be characteristically unusual, where increase in heat transfer is accompanied with a reduction in frictional loss. The enhanced performance evaluated by both area goodness and volume goodness measures, is seen to render a substantially more compact heat exchanger.
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ASME 2009 International Mechanical Engineering Congress and Exposition
November 13–19, 2009
Lake Buena Vista, Florida, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4382-6
PROCEEDINGS PAPER
Computational Modeling of Convective Heat Transfer in Converging-Diverging Plate Channels With Fin-Wall Perforation Available to Purchase
O. A. Huzayyin,
O. A. Huzayyin
University of Cincinnati, Cincinnati, OH
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M. A. Jog,
M. A. Jog
University of Cincinnati, Cincinnati, OH
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R. M. Manglik
R. M. Manglik
University of Cincinnati, Cincinnati, OH
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O. A. Huzayyin
University of Cincinnati, Cincinnati, OH
M. A. Jog
University of Cincinnati, Cincinnati, OH
R. M. Manglik
University of Cincinnati, Cincinnati, OH
Paper No:
IMECE2009-12416, pp. 1173-1181; 9 pages
Published Online:
July 8, 2010
Citation
Huzayyin, OA, Jog, MA, & Manglik, RM. "Computational Modeling of Convective Heat Transfer in Converging-Diverging Plate Channels With Fin-Wall Perforation." Proceedings of the ASME 2009 International Mechanical Engineering Congress and Exposition. Volume 9: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B and C. Lake Buena Vista, Florida, USA. November 13–19, 2009. pp. 1173-1181. ASME. https://doi.org/10.1115/IMECE2009-12416
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