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Freezing of water droplets on solid surfaces: An experimental and numerical study

DSpace at IIT Bombay

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Field Value
 
Title Freezing of water droplets on solid surfaces: An experimental and numerical study
 
Creator CHAUDHARY, G
LI, R
 
Subject Water droplet
Supercooled surface
Freezing
Heat transfer
Wettability
LIQUID DROPLET
INFRARED EMISSIVITY
SUPERCOOLED WATER
SOLIDIFICATION
ICE
MODELS
IMPACT
LINE
 
Description We present an experimental and numerical study on the freezing of static water droplets on surfaces with different wettability when the surfaces are subject to rapid cooling. Temperature evolution of the droplets is recorded using both intrusive and non-intrusive methods to identify the processes involved in the cooling and phase change of the droplets. It is found the time taken for a droplet to freeze depends on the droplet temperature at the pre-recalescence instant as well as the surface wettability. To provide insight into the heat transfer during the freezing process, thermal simulation is carried out by numerically solving the enthalpy-based heat conduction equation. To determine the initial and boundary conditions for the simulation of freezing, the thermal history of the droplet prior to the occurrence of freezing is numerically analyzed by solving single phase heat conduction driven by rapid cooling. The numerical results of droplet freezing are compared to the experimental data, showing close agreement on the freezing time. (C) 2014 Elsevier Inc. All rights reserved.
 
Publisher ELSEVIER SCIENCE INC
 
Date 2014-12-28T17:54:59Z
2014-12-28T17:54:59Z
2014
 
Type Article
 
Identifier EXPERIMENTAL THERMAL AND FLUID SCIENCE, 5786-93
0894-1777
1879-2286
http://dx.doi.org/10.1016/j.expthermflusci.2014.04.007
http://dspace.library.iitb.ac.in/jspui/handle/100/17042
 
Language English