NDLI: Evaporation of Water Droplets in a High-Temperature Gaseous Medium

Content Provider	Springer Nature Link
Author	Vysokomornaya, O. V. Kuznetsov, G. V. Strizhak, P. A.
Copyright Year	2016
Abstract	A numerical solution of the problem of heat and mass transfer in evaporation of a droplet of water moving in a stream of high-temperature (up to 1200 K) gases is done on the basis of a system of nonlinear nonstationary partial differential equations describing conductive and radiative heat transfer in the droplet, as well as composite heat transfer at the ″liquid–gas″ interface. The values of the water evaporation rate have been determined. It is shown that the dependence of the evaporation rate on the droplet surface temperature has a nonlinear character. Characteristic relationships between the convective and radiative heat fluxes on the droplet surface (the radiative flux substantially exceeds the convective one; on decrease in the difference between the gas and droplet surface temperatures the difference between the radiative and convective heat fluxes decreases), the lifetimes (total evaporation) of droplets, as well as of the temperature and concentration of steam and gases in the vicinity of droplets have been determined. The calculated characteristics of the water droplet evaporation under conditions of high temperatures of the gas medium differ considerably from those obtained within the framework of the "diffusional" model of evaporation. A comparison of the results of numerical simulation with the experimental data obtained with the use of high-velocity panoramic optical methods of visualization by ″tracing particles″ is carried out.
Starting Page	141
Ending Page	151
Page Count	11
File Format	PDF
ISSN	10620125
Journal	Journal of Engineering Physics and Thermophysics
Volume Number	89
Issue Number	1
e-ISSN	1573871X
Language	English
Publisher	Springer US
Publisher Date	2016-02-18
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	heat and mass transfer evaporation droplet water gaseous medium high temperatures Engineering Thermodynamics, Heat and Mass Transfer Thermodynamics Industrial Chemistry/Chemical Engineering Statistical Physics, Dynamical Systems and Complexity Mechanics
Content Type	Text
Resource Type	Article
Subject	Engineering Condensed Matter Physics

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