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Original Articles

Analysis of Combusting High-Pressure Monopropellant Sprays

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Pages 95-112 | Received 01 May 1987, Accepted 03 Aug 1987, Published online: 27 Apr 2007
 

Abstract

A simplified analysis of monopropellant spray combustion was developed, based on the locally-homogeneous-flow approximation of multiphase flow theory and the thin-flame approximation of turbulent premixed flame theory. The performance of the analysis was evaluated using shadowgraphs of spray flames for a hydroxyl ammonium nitrate (HAN)-hased liquid monopropellant at ambient pressures of 6-8 MPa. Predictions showed that these spray flames are very sensitive to the degree of flow development at the injector exit, with fully-developed turbulent flows requiring significantly smaller combustion volumes than slug flows having low initial turhulence levels. There was encouraging agreement between predictions and measurements; however, uncertainties concerning injector exit conditions for the experiments precluded definitive assessment of the analysis

Notes

Address correspondence to: G. M. Faeth. 217 Aerospace Engineering Building, The University of Michigan, Ann Arbor, Ml 48109-2140, Telephone: (313) 764-7202.

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