Accession Number:

AD0612018

Title:

THE FAR FIELD OF A ROCKET EXHAUST JET AT LOW AND MODERATE ALTITUDES

Descriptive Note:

Corporate Author:

GENERAL DYNAMICS/ASTRONAUTICS SAN DIEGO CA

Personal Author(s):

• Boynton, Frederick P.

Report Date:

1964-12-01

Pagination or Media Count:

55.0

Abstract:

A method is given for predicting the flow field of a rocket exhaust plume at distances far removed from the nozzle exit at altitudes where afterburning of the exhaust is appreciable. The calculation combines a fluid mechanical analysis of turbulent mixing due to Libby with the adiabatic flame temperature calculation of Boynton and Neu. The eddy viscosity is determined from a consideration of conditions under which compressible turbulent flows appear to exhibit self-preserving behavior. Instructions are given for preparing input to two computer programs which are based on the analysis in the report. In two appendices, it is shown how the eddy viscosity constants may be derived from incompressible jet flow data and a comparison of the results of the present calculation with experimental wind-tunnel rocket exhaust behavior is given.

Descriptors:

• *CHEMICAL REACTIONS
• COMBUSTION
• EXHAUST GASES
• FLUID MECHANICS
• JET FLOW
• MATHEMATICAL PREDICTION
• ROCKETS
• TURBULENCE

Subject Categories:

• Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE