Structure and mixing properties of combusting monopropellant sprays

T. W. Lee, G. M. Faeth

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

The spray combustion properties of a hydroxylammonium nitrate (HAN)-based monopropellant (LGP 1845) were studied both theoretically and experimentally. Drop size, liquid mass flow rate, and liquid mass flux distributions were measured for pressure-atomized sprays in the atomization breakup regime, burning within a combustion gas environment at pressures of 4.5-5.0 MPa. Two separated-flow models were evaluated using the new measurements: a deterministic separated-flow model where drop-turbulence interactions were ignored, and a stochastic separated-flow model where drop-turbulence interactions were considered using random-walk computations for drop motion. When based on burning rates found from earlier single-drop experiments, both models were in reasonably good agreement with the measurements. Separated-flow effects are quite important for these sprays, with the length of the liquid-containing region being relatively independent of injector diameter and extending roughly 300 mm from the injector exit for injector exit velocities of roughly 70 m/s and injector diameters of 0.3 and 0.6 mm.

Original languageEnglish (US)
Pages (from-to)271-279
Number of pages9
JournalJournal of Propulsion and Power
Volume8
Issue number2
DOIs
StatePublished - Jan 1 1992

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Structure and mixing properties of combusting monopropellant sprays'. Together they form a unique fingerprint.

  • Cite this