Structure and mixing properties of combusting monopropellant sprays

Taewoo Lee, G. M. Faeth

Research output: Contribution to journalArticle

4 Citations (Scopus)

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
StatePublished - Mar 1992
Externally publishedYes

Fingerprint

monopropellants
Monopropellants
separated flow
injectors
spray
sprayers
liquids
turbulence
liquid
Liquids
Turbulence
drop size
burning rate
mass flow rate
atomizing
random walk
nitrates
Atomization
interactions
Nitrates

ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Structure and mixing properties of combusting monopropellant sprays. / Lee, Taewoo; Faeth, G. M.

In: Journal of Propulsion and Power, Vol. 8, No. 2, 03.1992, p. 271-279.

Research output: Contribution to journalArticle

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