Accession Number:

ADA051052

Title:

Numerical Predictions for Ignition of a Confined Reactive Gas

Descriptive Note:

Technical rept.

Corporate Author:

ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1978-01-01

Pagination or Media Count:

65.0

Abstract:

Ignition of a reactive gas in a closed chamber is investigated by numerically solving the one-dimensional, compressible Navier-Stokes Equations for a multi-species reacting flow. The full momentum equation is retained in order to model the influence of the finite-size chamber. Ignition is studied on a gono-go basis when the external heat flux is interrupted. The results for a simple premixed reaction show a complex interaction with the acoustic modes, a hang-fire ignition separating gono-go, and the possibility of a shock wave once ignition occurs. Dependence of ignition time on external heat flux, activation energy, and other kinetic parameters is described.

Subject Categories:

  • Numerical Mathematics
  • Ammunition and Explosives
  • Combustion and Ignition

Distribution Statement:

APPROVED FOR PUBLIC RELEASE