Experimental and theoretical study of a monodisperse spray

J. E. Kirwan, T. A. Lee, G. N. Schroering, H. Krier, J. E. Peters

Research output: Contribution to journalArticlepeer-review


An investigation in the recirculating flow region downstream of a centerbody monodisperse fuel injector has been performed. Experimental measurements of gas temperature, axial velocity, and turbulent kinetic energy as well as drop size and velocity have been obtained for n-heptane. A two-dimensional, two-phase computer model has utilized these measurements as inlet and outlet gas-phase boundary conditions as well as spray inlet conditions to predict both the gaseous flowfield and droplet behavior. A comparison between predicted and measured gas-phase velocities shows excellent agreement. The momentum exchange between the two phases is demonstrated as relative drop velocity (drop velocity minus gas velocity) decreases with axial distance. Using the d2 law for droplet evaporation, the calculated evaporation coefficient β underpredicts the measured value by 30%, corresponding to a 4% overprediction of drop size.

Original languageEnglish (US)
Pages (from-to)299-307
Number of pages9
JournalJournal of Propulsion and Power
Issue number4
StatePublished - 1988

ASJC Scopus subject areas

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science


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