A CRITICAL HEAT-FLUX CORRELATION FOR DROPLET IMPACT COOLING

Authors
SAWYER ML JETER SM ABDELKHALIK SI
Citation
Ml. Sawyer et al., A CRITICAL HEAT-FLUX CORRELATION FOR DROPLET IMPACT COOLING, International journal of heat and mass transfer, 40(9), 1997, pp. 2123-2131
Citations number
19
Categorie Soggetti
Mechanics,"Engineering, Mechanical",Thermodynamics
Journal title
International journal of heat and mass transfer → ACNP
ISSN journal
00179310
Volume
40
Issue
9
Year of publication
1997
Pages
2123 - 2131
Database
ISI
SICI code
0017-9310(1997)40:9<2123:ACHCFD>2.0.ZU;2-A
Abstract
The characteristics of a single stream of monodispersed water droplets impacting a horizontal, upward facing flat surface have been investig ated. The objective was to determine the effect of droplet diameter, i mpact 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 drop lets. The Weber and Strouhal numbers ranged from 175 to 730 and 7.00 x 10(-3)-3.00 x 10(-2) respectively. With a confidence level of greater than 95% differences between predicted and experimental CHF values we re less than +/-22%. (C) 1997 Elsevier Science Ltd. All rights reserve d.