EXPERIMENTAL STUDY FOR TRANSIENT HEAT TRANSFER FROM A FLAT PLATE UNDER AIR IMPINGEMENT

Authors

  • Adnan A. Abdul Rasool Mechanical Engineering Department, Al-Mustansiriayah University, Baghdad, Iraq Author
  • Dhamyaa Saad Khudhur Mechanical Engineering Department, Al-Mustansiriayah University, Baghdad, Iraq Author
  • Sarah Ahmed Oudah Mechanical Engineering Department, Al-Mustansiriayah University, Baghdad, Iraq Author

Keywords:

jet cooling, heat transfer on a flat plate, transient impingement

Abstract

The present work represent an experimental study to verify the transient heat transfer characteristics of a target plate under air impingement from different orifice sizes (D=5, 10, 15 and 20mm), with orifice to plate distance ratio (H/D=2, 4, 6 and 8). Air jet velocities is varied in the range (Uj=18-40m/s) representing (Re=7100-11900). The heat transfer coefficient on the target plate are calculated on the basis of two dimensional infinite case. The local variation of Nusselt number in the transient period is measured. The values are compared to that at the steady state condition. Results show that the Nusselt values are maximum at state of impingement process and decays with time on proceeding of the cooling process and also with space reaching the plate edge.

 

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Key Dates

Published

2017-03-01

Issue

Vol. 21 No. 2 (2017): Journal of Engineering and Sustainable Development

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

The Journal of Engineering and Sustainable Development is an open-access journal that all contents are free of charge. Articles of this journal are licensed under the terms of the Creative Commons Attribution International Public License CC-BY 4.0 (https://creativecommons.org/licenses/by/4.0/legalcode) that licensees are unrestrictly allowed to search, download, share, distribute, print, or link to the full texts of the articles, crawl them for indexing and reproduce any medium of the articles provided that they give the author(s) proper credits (citation). The journal allows the author(s) to retain the copyright of their published article.
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How to Cite

EXPERIMENTAL STUDY FOR TRANSIENT HEAT TRANSFER FROM A FLAT PLATE UNDER AIR IMPINGEMENT. (2017). Journal of Engineering and Sustainable Development, 21(2), 62-79. https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/571

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