Mathematic Simulation of Two-phase Flow of GasGenerator with Central Igniter Tube

doi:10.3969/j.issn.1000-1093.2013.09.002

Abstract

Abstract:

The two-phase flow mathematic models are developed for gas generator with central igniter tube. The one-dimensional two-phase model is used for the ignition of central igniter tube, and the two-dimensional two-phase model is used for the energy release of tubular gas generator. The coupling function of two tubes is established through exchange between gas and solid. The interior ballistic simulation software is programmed by Mac Cormack two-step scheme and is used to calculate the gas generator. The calculated results well accord with the test results, which proves that the model is right and provides important theory foundation to structure design and optimization on gas generator with central igniter tube.Meanwhile, the energy releasing course is analyzed based on the simulation results. The result shows that the uniform ignition condition is the precondition of gas generator releasing energy steadily. The ignition energy released uniformly could ensure the reliable burning of powders in gas generator and the release of controlled energy.

Key words: ordnance science and technology, gas generator, two-phase flow, numerical simulation

CLC Number:

TJ32

WANG Shan-shan, WANG Hao, HUANG Ming, ZHANG Bo-zi. Mathematic Simulation of Two-phase Flow of GasGenerator with Central Igniter Tube[J]. Acta Armamentarii, 2013, 34(9): 1065-1071.

References

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