Modeling Of Dispersion And Ignition Processes
Of Finely Dispersed Particles Of Aluminum Using
A Solid Propellant Gas Generator
Author(s)
A. Rychkov, H. Miloshevich, Yu. Shokin, N. Eisenreich
& V. Weiser
Abstract
Using numerical modeling, we studied the formation and propagation of a cloud
of finely dispersed aluminum particles generated by a special unit under the
action of high-temperature combustion products from solid propellant gas
generator, as well as the ignition conditions of these particles. We used the
Favre-averaged system of Navier-Stokes equations closed by the q – ω
turbulence model to simulate the formation and motion of the cloud of finely
dispersed particles. The motion of the polydisperse second phase was described
within a stochastic approach that takes into account the effect of the turbulent
character of the flow field of the carrier gas on the motion of particles. The finite
volume method using the second-order upwind LU difference scheme with
TVD-properties is applied for numerically solving this system of equations. The
results obtained are in a qualitative agreement with experiments carried out at the
Fraunhofer Institute for Chemical Technology (Pfinztal, Germany).
Keywords: mathematical modeling, two-phase flow, processes of ignition and
burning, solid propellant gas generators.
1 Introduction
The scheme of a unit for the fast dispersion of finely dispersed particles is
shown in fig. la. It is a cylinder whose central part (a gas generator) is filled with
solid monopropellant spherical-form granules with a diameter of a few
Keywords
mathematical modeling, two-phase flow, processes of ignition and
burning, solid propellant gas generators.
Related Book
Other papers in this volume
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