A Parametric Study of a Flash Atomized Spray Using PDPA

  • Author / Creator
    Breton, Kevin M
  • This study used non-intrusive, optical based measurement techniques in a parametric study of a flash atomized jet. The bench scale water spray was operated at pressure ratios ranging from 6.80-17.0 and degrees of superheat of 20-80 °C. This broad range of parameters allowed for the evaluation of the influence of the operating conditions on the spray characteristics. Long exposure images were used in order to measure the spreading angle of the flashing jet which varied from 10-50° , while PDPA measurements were used in order to measure the radial profiles of the droplet velocities and diameters. The spray produced consistent droplet mean diameters of approximately 3 μm and centreline velocities from 25-35 m/s. The results indicate that the characteristics of a flashing spray operating at high degrees of superheat are robust with respect to changes in the operating pressure ratio.

  • Subjects / Keywords
  • Graduation date
    Fall 2013
  • Type of Item
  • Degree
    Master of Science
  • DOI
  • License
    This thesis is made available by the University of Alberta Libraries with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.