Accession Number:

ADA003316

Title:

Flame Sheet Model for a Diffusion-Type HF Chemical Laser.

Descriptive Note:

Final rept.,

Corporate Author:

SCICOM INC HUNTSVILLE ALA

Personal Author(s):

Report Date:

1973-09-01

Pagination or Media Count:

97.0

Abstract:

The report presents a theory describing the flow field near the entrance to the cavity of a continuous wave chemical laser. The HF chemistry is considered in some detail but the point of view is general and applicable to other chemistries. The theory yields criteria for limiting flow regimes and establishes the influence of several key parameters explicitly. In particular, the important role played by the diluents in inhibiting collisional deactivation is discussed on the basis of the macroscopic flow equations. Laminar and turbulent flows are treated on a unified basis the latter are discussed from the phenomenological point of view. First approximations for the case of a diffusion flame are obtained and an appropriate perturbation technique describing collisional deactivation is developed. The diffusion limited case is shown to be a valid approximation to several systems now operating. Radiative interactions are considered for a medium near saturation. Possible rotational nonequilibrium effects are discussed briefly.

Subject Categories:

  • Physical Chemistry
  • Lasers and Masers
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE