Holographic investigation on average Nusselt number over an isothermal rotating sphere

Sheng-Mao Tieng; An-Cherng Yan

doi:10.1117/12.271344

10 April 1997 Holographic investigation on average Nusselt number over an isothermal rotating sphere

Sheng-Mao Tieng, An-Cherng Yan

Proceedings Volume 3011, Practical Holography XI and Holographic Materials III; (1997) https://doi.org/10.1117/12.271344
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

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.

Citation Download Citation

Sheng-Mao Tieng and An-Cherng Yan "Holographic investigation on average Nusselt number over an isothermal rotating sphere", Proc. SPIE 3011, Practical Holography XI and Holographic Materials III, (10 April 1997); https://doi.org/10.1117/12.271344

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