Modeling of the Agglomeration Phenomena in Combustion of Aluminized Composite Solid Propellant

Yinon Yavor; Alon Gany; Merrill W. Beckstead

doi:10.1002/prep.201300073

journal article Oct 31, 2013

Modeling of the Agglomeration Phenomena in Combustion of Aluminized Composite Solid Propellant

Yinon Yavor Alon Gany Merrill W. Beckstead

Propellants, Explosives, Pyrotechnics Vol. 39 No. 1 pp. 108-116 · Wiley

View at Publisher Save 10.1002/prep.201300073

Abstract

AbstractA theoretical model was developed in order to predict the size of agglomerates ejected from aluminized composite solid propellants. The model accounts for aspects of both mechanistic and geometric approaches. A thin mobile surface layer is assumed to dominate particle accumulation. Agglomeration number Nag expressing the ratio between ignition and accumulation times, was found to greatly affect the characteristics of agglomeration phenomena, as noted in previous works. The concept of a characteristic distance De of the mobile surface layer was introduced, depending mostly on coarse AP particle diameter and loading. It was found to have a significant effect on the resulting agglomerate diameter. An agglomeration threshold was defined as the particle diameter equal to the mobile layer thickness. Particles smaller than this threshold have shown tendency to form large agglomerates, whereas particles with a somewhat larger diameter have demonstrated faster ignition and smaller ejected agglomerates. Model predictions for a number of propellant compositions showed good agreement with other theoretical studies as well as with experimental results.

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Citations

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References

Details

Published: Oct 31, 2013
Vol/Issue: 39(1)
Pages: 108-116
License: View

Authors

Cite This Article

Yinon Yavor, Alon Gany, Merrill W. Beckstead (2013). Modeling of the Agglomeration Phenomena in Combustion of Aluminized Composite Solid Propellant. Propellants, Explosives, Pyrotechnics, 39(1), 108-116. https://doi.org/10.1002/prep.201300073

Modeling of the Agglomeration Phenomena in Combustion of Aluminized Composite Solid Propellant

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