Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

The multidimensional interior ballistic two-phase flow and the chambrage problem.

Mehrdimensionale innenballistische Zweiphasenströmung und das Chambrage-Problem
 
: Meineke, E.; Heiser, R.

Journal of propulsion and power 7 (1989), No.6, pp.909-914
ISSN: 0748-4658
Joint Propulsion Conference <25, 1989, Monterey>
English
Conference Paper
Fraunhofer EMI ()
Anzündung; Chambrage; code; computational model; finite difference methods; Finite Differenz Methode; Gittererzeugung; grid generation; ignition; Innenballistik; interior ballistic; interior ballistics; Lagrange Gradient; mehrdimensionale Strömung; mehrdimensionale Zweiphasenströmung; multidimensional flow; multidimensional two-phase flow; numerical result; numerical results; numerische Ergebnisse; numerisches Ergebnis; Rechenmodell; Rohrströmung; tube flow; two-phase flow; Zweiphasenströmung

Abstract
The effect of the chamber geometry of tube weapons on the performance and on the interior ballistic two-phase flow is investigated by applying the 2-D model AMI. The axisymmetric formulation in AMI has been modified such that arbitrary chamber shapes can be considered without any simplifying assumptions. The numerical results for large caliber systems show interesting flow patterns caused by the axial changes in cross-section, e.g., by the transition cone or the igniter geometry. The numerical procedure is explained. Computational results emphasize the differences between a constant diamter chamber-bore configuration and a configuration with chambrage, i.e., with non-constant diameter. The effect of the chamber geometry of tube weapons on the performance and on the interior ballistic two-phase flow is investigated by applying the two- dimensional axisymmetric model of interior ballistics (AMI). The axisymmetric formulation in AMI has been modified such that arbitrary chamber shapes can be considered without any simplifying assumptions. The numerical results for large caliber systems show interesting flow patterns caused by the axial changes in cross section, e.g., by the transition cone or the ignitor geometry. The numerical procedure is explained. Computational results emphasize the differences between a constant-diameter chamber-bore configuration and a configuration with chambrage, i.e., with nonconstant diameter.

: http://publica.fraunhofer.de/documents/PX-25241.html