Title

Scaling analysis: Equivalence of convective and radiative heating of levitated droplet

Authors

Authors

A. Saha; S. Basu;R. Kumar

Comments

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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

VAPORIZATION; EVAPORATION; STREAM; MODEL; FLOW; Physics, Applied

Abstract

This letter develops theoretical relationships for equilibrium timescale and temperature scale of a vaporizing droplet in a convective and a radiative environment. The transient temperature normalized by the respective scales exhibits a unified profile for both modes of heating. The analysis allows for the prediction of the required laser flux to show its equivalence in a corresponding heated gas stream. The theoretical equivalence shows good agreement with experiments across a range of droplet sizes. Simple experiments can be conducted in a levitator to extrapolate information in realistic convective environments like combustion and spray drying. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4720092]

Journal Title

Applied Physics Letters

Volume

100

Issue/Number

20

Publication Date

1-1-2012

Document Type

Article

Language

English

First Page

5

WOS Identifier

WOS:000304265000109

ISSN

0003-6951

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