Experimental investigation on flow characteristics of the flash swirl spray

Hyungmin Kim, Woongsup Yoon

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Flow characteristics of atmospheric flash spray from a hollow cone swirl atomizer is experimentally investigated. Velocity fields due to primary and secondary spray formation are optically measured and addressed in conjunction with the drop size distributions. Injectant (water) is pressurized and heated up by controllable line heating system into the thermodynamic state supersaturated in the atmosphere, and exhausted into the atmospheric air by the swirl atomizer. Three dimensional velocity field of the flash swirl spray flow is measured by a multi-plane scanning Stereo-PIV system. The spray flow field is examined in terms of injection pressure and dimensionless superheat degree. The results show that the momentum of the primary and secondary spray is increased simultaneously with increasing in the injection pressure. Formation of the secondary spray heavily depends on the dimensionless superheat degree. The secondary spray grows with the dimensionless superheat degree while the primary spray diminishes.

Original languageEnglish
Title of host publication52nd Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624102561
Publication statusPublished - 2014
Event52nd Aerospace Sciences Meeting 2014 - National Harbor, United States
Duration: 2014 Jan 132014 Jan 17

Publication series

Name52nd Aerospace Sciences Meeting


Other52nd Aerospace Sciences Meeting 2014
Country/TerritoryUnited States
CityNational Harbor

Bibliographical note

Publisher Copyright:
© 2015 American Institute of Aeronautics and Astronautics Inc. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering


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