Measurement of the Sea Spray Droplet Size Distributions at High Winds

2003 ◽  
Author(s):  
William E. Asher ◽  
C. W. Fairall
Keyword(s):  
Droplet Size ◽  
Sea Spray ◽  
Size Distributions ◽  
Spray Droplet ◽  
High Winds ◽  
Droplet Size Distributions

Spray Droplet Size Distributions Delivered by Air Blast Orchard Sprayers

1977 ◽  
Vol 20 (2) ◽  
pp. 0232-0237 ◽  
Author(s):  
D. L. Reichard ◽  
H. J. Retzer ◽  
L. A. Liljedahl ◽  
F. R. Hall
Keyword(s):  
Droplet Size ◽  
Size Distributions ◽  
Spray Droplet ◽  
Air Blast ◽  
Droplet Size Distributions

scholarly journals Pneumatic Atomization: Beam-Steering Correction in Laser Diffraction Measurements of Spray Droplet Size Distributions

2018 ◽  
Vol 8 (10) ◽  
pp. 1738 ◽  
Author(s):  
Marc Wittner ◽  
Heike Karbstein ◽  
Volker Gaukel
Keyword(s):  
Size Distribution ◽  
Droplet Size ◽  
Beam Steering ◽  
Correction Method ◽  
Laser Diffraction ◽  
New Method ◽  
Size Distributions ◽  
Spray Droplet ◽  
Droplet Sizes ◽  
Droplet Size Distributions

Laser diffraction is among the most widely used methods for spray droplet size measurements. However, the so-called beam-steering effect must be considered when pneumatic atomizers are used for droplet generation. The beam-steering effect is a systematic measurement error, leading to the detection of apparent large spray droplets due to gradients in the refractive index of the gas phase. The established correction method is based on the reduction of the laser diffraction system’s measurement range by deactivation of detectors, relevant for the detection of large droplets. As this method is only applicable when size ranges of real and apparent droplet sizes are clearly different, an alternative method for beam-steering correction is introduced in the presented study. It is based on a multimodal log-normal fit of measured spray droplet sizes. The modality representing the largest droplets is correlated to the beam-steering effect and therefore excluded from the measured size distribution. The new method was successfully applied to previously published droplet size distribution measurements of an internal mixing Air-Core-Liquid-Ring (ACLR) atomizer. In measurements where the method of detector deactivation is applicable, excellent accordance of droplet size distributions, gained by both correction methods, was found. In measurements with overlapping real and apparent parts of the distribution, the new correction method led to a significant reduction of overestimated large droplets. As a consequence, we conclude that the new method presented here for beam-steering correction should be applied in laser diffraction measurements of spray droplet sizes, generated by pneumatic atomizers.

DROPLET SIZE DISTRIBUTIONS OF ADJUVANT-AMENDED SPRAYS FROM AN AIR-ASSISTED FIVE-PORT PWM NOZZLE

2011 ◽  
Vol 21 (3) ◽  
pp. 263-274 ◽  
Author(s):  
Jiabing Gu ◽  
Heping Zhu ◽  
Weimin Ding ◽  
Hong Young Jeon
Keyword(s):  
Droplet Size ◽  
Size Distributions ◽  
Droplet Size Distributions

CONVERSION OF DROPLET SIZE DISTRIBUTIONS FROM PMS OPTICAL ARRAY PROBE TO MALVERN LASER DIFFRACTION

2002 ◽  
Vol 12 (1-3) ◽  
pp. 267-282 ◽  
Author(s):  
Milton E. Teske ◽  
Harold W. Thistle ◽  
Andrew J. Hewitt ◽  
I. W. Kirk
Keyword(s):  
Droplet Size ◽  
Laser Diffraction ◽  
Size Distributions ◽  
Array Probe ◽  
Droplet Size Distributions

EXPERIMENTAL INVESTIGATION, SCALE-UP AND MODELING OF DROPLET SIZE DISTRIBUTIONS IN TURBULENT MULTIPHASE JETS

2020 ◽  
Vol 32 (2) ◽  
pp. 113-136 ◽  
Author(s):  
Simeon Pesch ◽  
Rebecca Knopf ◽  
Anahita Radmehr ◽  
Claire B. Paris ◽  
Zachary M. Aman ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Droplet Size ◽  
Scale Up ◽  
Size Distributions ◽  
Droplet Size Distributions
Sign in / Sign up

Export Citation Format

Share Document