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Proceedings Paper

Holographic investigation on average Nusselt number over an isothermal rotating sphere
Author(s): Sheng-Mao Tieng; An-Cherng Yan
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Paper Abstract

The average Nusselt number of a heated sphere rotating in quiescent air was measured experimentally over the range 0 < Re < 33320 from free to forced convection regimes. As well, real time holographic interferometry was applied to the observation of flows structure and evolution, and later employed to analyze the deviations revealed by a comparison of the measured data Nu with previous experimental and theoretical results. Thus, real time holographic visualization provides a physical understanding of the effect of the evolving flow structure on Nu as rotational speed increases. In addition, a new asymptotic formula for correlating the experimentally measured Nu was established.

Paper Details

Date Published: 10 April 1997
PDF: 7 pages
Proc. SPIE 3011, Practical Holography XI and Holographic Materials III, (10 April 1997); doi: 10.1117/12.271344
Show Author Affiliations
Sheng-Mao Tieng, National Cheng Kung Univ. (Taiwan)
An-Cherng Yan, National Cheng Kung Univ. (Taiwan)

Published in SPIE Proceedings Vol. 3011:
Practical Holography XI and Holographic Materials III
Stephen A. Benton; T. John Trout, Editor(s)

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