Title

Experimental Analysis Of Shape Deformation Of Evaporating Droplet Using Legendre Polynomials

Keywords

Droplet instability; Laser heating; Legendre polynomial

Abstract

Experiments involving heating of liquid droplets which are acoustically levitated, reveal specific modes of oscillations. For a given radiation flux, certain fluid droplets undergo distortion leading to catastrophic bag type breakup. The voltage of the acoustic levitator has been kept constant to operate at a nominal acoustic pressure intensity, throughout the experiments. Thus the droplet shape instabilities are primarily a consequence of droplet heating through vapor pressure, surface tension and viscosity. A novel approach is used by employing Legendre polynomials for the mode shape approximation to describe the thermally induced instabilities. The two dominant Legendre modes essentially reflect (a) the droplet size reduction due to evaporation, and (b) the deformation around the equilibrium shape. Dissipation and inter-coupling of modal energy lead to stable droplet shape while accumulation of the same ultimately results in droplet breakup. © 2013 Elsevier B.V.

Publication Date

1-24-2014

Publication Title

Physics Letters, Section A: General, Atomic and Solid State Physics

Volume

378

Issue

5-6

Number of Pages

539-548

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.physleta.2013.12.015

Socpus ID

84892616188 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84892616188

This document is currently not available here.

Share

COinS