Theoretical Study of Two-Phase Flow Associated with Granular Bag Charges
Abstract
The two phase flow code NOVA is used to study the effect of neglect of the geometric details of the charge configuration by making psuedo-1D approximations of radial ullage. An axially uniform radial 1D flow assumption calculation showed all flow variables except porosity to be radially uniform. A calculation permitting mass transfer around and through the bag predicts ignition in front as well as in the rear of the charge, thereby, reducing the pressure wave amplitudes. A third calculation simulated a break in the center core igniter and subsequent burn through of the bag material separating zone increments. The obstruction little affected computed ballistics. Annular ullage was found to persist contrary to 1D models which assume radial uniformity.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1978
- Accession Number
- ADA062144
Entities
People
- Paul S. Gough