A critical heat flux correlation for droplet impact cooling

The characteristics of a single stream of monodispersed water droplets impacting a horizontal, upward facing flat surface have been investigated. The objective was to determine the effect of droplet diameter, impact frequency and impact velocity on the critical heat flux (CHF). A generalized correla...

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Bibliographic Details
Published in:International journal of heat and mass transfer 1997-06, Vol.40 (9), p.2123-2131
Main Authors: Sawyer, M.L., Jeter, S.M., Abdel-Khalik, S.I.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Heat flow in porous media
Heat transfer
Heat transfer in inhomogeneous media, in porous media, and through interfaces
Physics
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Summary:The characteristics of a single stream of monodispersed water droplets impacting a horizontal, upward facing flat surface have been investigated. The objective was to determine the effect of droplet diameter, impact frequency and impact velocity on the critical heat flux (CHF). A generalized correlation has been developed for the nondimensional CHF as a function of the Weber and Strouhal numbers of the impacting droplets. The Weber and Strouhal numbers ranged from 175 to 730 and 7.00 × 10 −3−3.00 × 10 −2, respectively. With a confidence level of greater than 95% differences between predicted and experimental CHF values were less than ±22%.
ISSN:0017-9310
1879-2189
DOI:10.1016/S0017-9310(96)00267-0