The paper investigates experimentally and numerically the heat transfer augmentation from a semicircular heated surface due to confined slot-jet impingement. For different Reynolds numbers, the average and local Nusselt numbers are calculated by reporting the heater thermal image obtained by an infrared camera, the inlet and outlet flow temperature via thermocouples, the flow rate via rotameter, and the pressure drop across the inlet and outlet flow via pressure transducers. The single enclosed jet flow is used to create a single cyclone inside the internal semicircular channel to promote the heat transfer at different jet Reynolds numbers (Rejet = 1000–5000). Three turbulence models, namely, the standard k – ɛ, k – ω and the Reynolds stress model (RSM) have been investigated in the present paper by comparing Nusselt number and normalized pressure drop distribution against the experimental data, helping ascertain on the relative merits of the adopted models. The computational fluid dynamics results show that the RSM turbulent model reasonably forecast the experimental data.
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e-mail: MohammadH@uaeu.ac.ae
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December 2011
This article was originally published in
Journal of Heat Transfer
Research Papers
Measurement and Modeling of Confined Jet Discharged Tangentially on a Concave Semicylindrical Hot Surface
Mohammad O. Hamdan,
Mohammad O. Hamdan
Assistant Professor
Mechanical Engineering Department,
e-mail: MohammadH@uaeu.ac.ae
United Arab Emirates University
, P.O. Box 17555, Al-Ain, Abu Dhabi, United Arab Emirates
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Emad Elnajjar,
Emad Elnajjar
Assistant Professor
Mechanical Engineering Department,
United Arab Emirates University
, P.O. Box 17555, Al-Ain, Abu Dhabi, United Arab Emirates
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Yousef Haik
Yousef Haik
Professor
Mechanical Engineering Department,
United Arab Emirates University
, P.O. Box 17555, Al-Ain, Abu Dhabi, United Arab Emirates
Search for other works by this author on:
Mohammad O. Hamdan
Assistant Professor
Mechanical Engineering Department,
United Arab Emirates University
, P.O. Box 17555, Al-Ain, Abu Dhabi, United Arab Emirates
e-mail: MohammadH@uaeu.ac.ae
Emad Elnajjar
Assistant Professor
Mechanical Engineering Department,
United Arab Emirates University
, P.O. Box 17555, Al-Ain, Abu Dhabi, United Arab Emirates
Yousef Haik
Professor
Mechanical Engineering Department,
United Arab Emirates University
, P.O. Box 17555, Al-Ain, Abu Dhabi, United Arab Emirates
J. Heat Transfer. Dec 2011, 133(12): 122203 (7 pages)
Published Online: October 7, 2011
Article history
Received:
October 28, 2010
Revised:
June 27, 2011
Online:
October 7, 2011
Published:
October 7, 2011
Citation
Hamdan, M. O., Elnajjar, E., and Haik, Y. (October 7, 2011). "Measurement and Modeling of Confined Jet Discharged Tangentially on a Concave Semicylindrical Hot Surface." ASME. J. Heat Transfer. December 2011; 133(12): 122203. https://doi.org/10.1115/1.4004529
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