Heat transfer enhancement using corrugated ribbed passages is one of the common enhancement techniques inside heat exchangers. The present study investigated numerically the effect of the corrugation rib angle of attack on the fluid flow and heat transfer characteristics inside the corrugated ribbed passage. The commercial computational fluid dynamics code PHOENICS 2006 was used to perform the numerical analysis by solving the Navier–Stokes and energy equations. The experimental part of this study was used only to validate the numerical model, and a good agreement between the experimental results and the model was obtained. The flow field characteristics and heat transfer enhancement were numerically investigated for different corrugated rib angles of attack as follows: 90 deg, 105 deg, 120 deg, 135 deg, and 150 deg. The corrugation rib angle of attack has a great effect on the reversed flow zone, the flow reattachments, and the enhancement of the heat transfer coefficient through the duct. The recommended rib angle of attack, which gives the optimum thermohydraulic performance, is found to be between 135 deg and 150 deg. The value of the maximum thermohydraulic performance is about 3.6 for the 150 deg rib angle of attack at a Reynolds number equal to 10,000.
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The Effect of the Corrugation Rib Angle of Attack on the Fluid Flow and Heat Transfer Characteristics Inside Corrugated Ribbed Passage
A. M. I. Mohamed,
A. M. I. Mohamed
Associate Professor of Mechanical Power Engineering
Faculty of Engineering,
Port-Said University
, Port-Said 42523, Egypt
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R. Hoettiba,
R. Hoettiba
Suez Canal Authority
, Port-Said 42523, Egypt
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A. M. Saif
A. M. Saif
Associate Lecturer
Mechanical Power Engineering, Faculty of Engineering,
Port-Said University
, Port-Said 42523, Egypt
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A. M. I. Mohamed
Associate Professor of Mechanical Power Engineering
Faculty of Engineering,
Port-Said University
, Port-Said 42523, Egypt
R. Hoettiba
Suez Canal Authority
, Port-Said 42523, Egypt
A. M. Saif
Associate Lecturer
Mechanical Power Engineering, Faculty of Engineering,
Port-Said University
, Port-Said 42523, EgyptJ. Heat Transfer. Aug 2011, 133(8): 081901 (10 pages)
Published Online: April 26, 2011
Article history
Received:
April 16, 2010
Revised:
February 7, 2011
Online:
April 26, 2011
Published:
April 26, 2011
Citation
Mohamed, A. M. I., Hoettiba, R., and Saif, A. M. (April 26, 2011). "The Effect of the Corrugation Rib Angle of Attack on the Fluid Flow and Heat Transfer Characteristics Inside Corrugated Ribbed Passage." ASME. J. Heat Transfer. August 2011; 133(8): 081901. https://doi.org/10.1115/1.4003668
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