Accession Number:

ADA222752

Title:

Liquid Fueled Ramjet combustion Instability: Acoustical and Vortical Interactions with Burning Sprays

Descriptive Note:

Final rept. 5 May 1985-30 Apr 1988,

Corporate Author:

CALIFORNIA UNIV BERKELEY DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1990-05-15

Pagination or Media Count:

99.0

Abstract:

A theoreticalcomputational study of liquid-fueled ramjet instability has been performed. The roles of droplet vaporization and spray combustion processes have been determined as rate-controlling factors on the performance and stability of combustors. The effects of vaporization, mixing, turbulent transport, and chemical kinetics were evaluated. The impact of variations in geometry, initial droplet size, equivalence ratio, and various numerical factors were determined. The study had four major components i individual droplet studies, ii a one-dimensional combustor analysis, iii a planar combustor study, and iv an axisymmetric study. A predictive capability was developed. Vaporization processes and droplet trajectories were found to affect performance and stability significantly. jes

Subject Categories:

  • Fuels

Distribution Statement:

APPROVED FOR PUBLIC RELEASE