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Transient Cooling of a Hot Surface by Droplets Evaporation. Final Report. July 1990-July 1991.


pdf icon Transient Cooling of a Hot Surface by Droplets Evaporation. Final Report. July 1990-July 1991. (6797 K)
Tartarini, P.; Liao, Y.; Kidder, C.; diMarzo, M.

NIST GCR 93-623; Report 91-1; 169 p. April 1993.

Sponsor:

National Institute of Standards and Technology, Gaithersburg, MD

Available from:

National Technical Information Service
Order number: PB94-156957

Keywords:

computer programs; cooling; droplets; evaporation; solid surfaces; water; thermal conductivity

Abstract:

This report describes the research performed during the period July 1990-July 1991 under a joint research program between the Mechanical Engineering Department of the University of Maryland and the Building and Fire Research Laboratory of the National Institute of Standards and Technology. The research is conducted by Graduate Research Assistants of the ME Department under the joint supervision of Dr. di Marzo (UMCP) and of Dr. Evans (CFR - NIST). This joint research program was initiated in January 1985. The long term objective of the study of droplet-solid interaction is to obtain information applicable to the extinguishment of fire through a droplet array (e.g. spray). The solids of concern include low thermal conductivity materials, typical of fire applications. Several important results were obtained in the first years of research. In particular, the modelling of the boundary condition at the liquid-vapor interface (at the droplet exposed surface) was validated with the data collected for water droplets evaporating on an aluminum block (diMarzo 1986a, 1986b, 1988).