Accession Number:

ADA305179

Title:

Reacting Flow Simulation for a Large-Scale Ram Accelerator.

Descriptive Note:

Final rept. Jan-Dec 94,

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s):

Report Date:

1996-02-01

Pagination or Media Count:

46.0

Abstract:

Computational fluid dynamics solutions of the full Navier-Stokes equations have been used to numerically simulate the reacting in-bore flow field for the ram accelerator projectile propulsion system. In this system, a projectile and obturator are injected at supersonic velocity into a stationary tube filled with a pressurized mixture of hydrocarbon, oxidizer, and inert gases. Flow stagnation on the obturator initiates combustion of the mixture before it is discarded. A system of shock waves on the projectile, in conjunction with viscous heating, sustains combustion. The resulting energy release travels with the projectile. Numerical simulation utilizing finite-rate chemical kinetics has been used to visualize the flow field, predict the effects of variation in system parameters, and predict projectile in-bore velocity.

Subject Categories:

  • Operations Research
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE