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Effect of Inlet Tangential Port Area on Droplet Size Distribution of Small-Scale Simplex Atomizer

[+] Author Affiliations
Muthu Selvan Govindaraj, Muralidhara H. Suryanarayana Rao, Vinod Kumar Vyas

CSIR-National Aerospace Laboratories, Bangalore, KA, India

Karthy Shanmugasundaram, Narendran Venugopal, Karthic Sankar

Bannari Amman Institute of Technology, Sathyamangalam, TN, India

Paper No. GTINDIA2013-3549, pp. V001T03A005; 9 pages
  • ASME 2013 Gas Turbine India Conference
  • ASME 2013 Gas Turbine India Conference
  • Bangalore, Karnataka, India, December 5–6, 2013
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5616-1
  • Copyright © 2013 by ASME


An experimental investigation was conducted to study the effects of increased area of inlet tangential ports on the droplet size distribution of small-scale simplex atomizer. The spray characteristics of four different simplex atomizers representing increasing area of inlet tangential ports (diameter range 0.6 mm to 0.9 mm) are examined using water as working fluid. Measurements of droplet size and droplet size distributions of the four different atomizer configurations were carried using Malvern droplet size instrument at various downstream locations from final orifice exit. These measurments has been taken for five different injection pressures of spray. Variation of droplet size and droplet size distribution along the flow direction of spray was examined. The effect of increase in injection pressure on droplet size distribution of the spray was examined. Increase in inlet tangential port area significantly affects droplet size and droplet size distributions of the spray and affects the length of primary breakup region.

Copyright © 2013 by ASME
Topics: Drops



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