Accession Number:

AD0729326

Title:

A Study of the Transient Behavior of Fuel Droplets during Combustion: Theoretical Considerations for Aerodynamic Stripping

Descriptive Note:

Final contract rept.

Corporate Author:

ILLINOIS UNIV AT URBANA DEPT OF AERONAUTICAL AND ASTRONAUTICAL ENGINEERING

Personal Author(s):

• Krier, Herman

Report Date:

1971-06-01

Pagination or Media Count:

42.0

Abstract:

The steady or quasi-steady combustion of isolated droplets or droplet sprays has been studied extensively and is reasonably well understood, but the problem of transient gas dynamics coupled to droplet combustion is poorly understood and adequate models to describe the phenomena have yet to be proposed. The problem is, however, extremely important to the technology of combustion devices. Aside from the detonation of spray droplet mixtures, in which droplet breakup and combustion are occurring under extremely transient conditions, a full descriptive theory of this phenomena will be invaluable in furthering an understanding of such phenomena as liquid rocket engine instabilities, engine thrust transients, combustion in liquid propellant gun systems, high pressure fuel-air gun systems, spray ignition mechanisms, and hybrid rocket dynamics. The report presents a theoretical analysis of one important phase of heterogeneous flow, a model for the aerodynamic stripping of fuel from the assumed spherical droplets.

Descriptors:

• *COMBUSTION
• *FUEL SPRAYS
• *ATOMIZATION
• EQUATIONS OF MOTION
• REDUCTION
• FLOW FIELDS
• DROPS
• COMBUSTION CHAMBERS

Subject Categories:

• Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE