Droplet clustering in sprays

Droplet clustering in sprays In this contribution, the spatial particle distribution in sprays of different atomizers is analyzed. Steady and unsteady particle structures are identified by evaluating the interparticle arrival time statistics at a certain position, which is the time increment between two succeeding particles. In addition to its characteristics of size and velocity, each particle exhibits an individual interparticle arrival time that is used to identify unsteady characteristics in the flow. Unsteadiness in sprays is thereby of interest for several reasons and in several applications, for example, in the combustion industry. A typical example of an unsteady spray behaviour is droplet clustering which can be caused, for example, by pulsating liquid disintegration procedures or particle interaction with large-scale eddy structures in the gas. The aim of the investigation is the analysis of such unsteady spray conditions. The evaluation of spray unsteadiness is done by means of point wise and time resolved PDA measurements in the spray of a pressure and twin-fluid atomizer, respectively. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

Droplet clustering in sprays

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Publisher
Springer-Verlag
Copyright
Copyright © 2005 by Springer-Verlag
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-005-0087-4
Publisher site
See Article on Publisher Site

Abstract

In this contribution, the spatial particle distribution in sprays of different atomizers is analyzed. Steady and unsteady particle structures are identified by evaluating the interparticle arrival time statistics at a certain position, which is the time increment between two succeeding particles. In addition to its characteristics of size and velocity, each particle exhibits an individual interparticle arrival time that is used to identify unsteady characteristics in the flow. Unsteadiness in sprays is thereby of interest for several reasons and in several applications, for example, in the combustion industry. A typical example of an unsteady spray behaviour is droplet clustering which can be caused, for example, by pulsating liquid disintegration procedures or particle interaction with large-scale eddy structures in the gas. The aim of the investigation is the analysis of such unsteady spray conditions. The evaluation of spray unsteadiness is done by means of point wise and time resolved PDA measurements in the spray of a pressure and twin-fluid atomizer, respectively.

Journal

Experiments in FluidsSpringer Journals

Published: Dec 13, 2005

References

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