SYMPOSIA PAPER Published: 01 January 2001

The Measurement of Droplet Size Distributions from Rotary Atomizers


Various experimental techniques have been developed to recover droplet size distributions emitted from rotary atomizers. These techniques include both single line-of-sight measurements through the center of the spray cloud and volume weighted averaging from multiple passes through portions of the spray. Because the droplet size distribution of a spray is one of the most important inputs into aerial spray prediction models such as AgDRIFT®, a consistent, widely-accepted standard for rotary atomizers should be developed and implemented with regard to this measurement. No such standard currently exists. The present paper summarizes current measurement techniques and develops a simple computer model to predict droplet movement following emission from a rotary atomizer in a wind tunnel. Qualitative comparisons are made with available data to demonstrate the effects of single line-of-sight measurements and weighted averaging from multiple passes.

Author Information

Teske, ME
Continuum Dynamics, Inc., Ewing, NJ, USA
Hewitt, AJ
Stewart Agricultural Research Services, Inc., Macon, MO, USA
Mickle, RE
REMSpC Spray Consulting, Ayr, ON, Canada
Price: $25.00
Contact Sales
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Developed by Committee: E35
Pages: 197–209
DOI: 10.1520/STP10729S
ISBN-EB: 978-0-8031-5459-9
ISBN-13: 978-0-8031-2891-0