An agglomeration model: Influence of proximity of particles on agglomeration
- 20 Downloads
Aluminum is added to solid propellant to increase specific impulse of solid propellant, but tends to stick together and so agglomerate into large particle. Such an agglomeration has a detrimental effect on the propellant performance due to incomplete combustion. There are so many factors that cause agglomeration. In this study, we assume the distance between aluminum particles as one of the most important factors affecting agglomeration. Microstructure was reflected through 3D random packing and X-ray micro-CT scanning. And agglomeration model was developed to predict the sizes of agglomerates. As a result of applying the model to the random packing and Xray micro-CT data, the volume distributions of agglomerates was similar in most of the ranges.
KeywordsAgglomeration Solid propellant Metal fuel 3D random packing X-ray micro-CT
x coordinate of sphere center
y coordinate of sphere center
z coordinate of sphere center
Radius of sphere
Diameter of sphere
Total number of spheres
Distance between spheres
Minimum agglomeration distance
Mean mass diameter
Unable to display preview. Download preview PDF.
This work was supported by the Agency for Defense and Development, “A Study on Aluminum Agglomeration Model during Solid Propellant Combustion”, (Contract No. UD160064BD), Republic of Korea.
- E. W. Price, R. Sigman, J. Sambamurthi and C. Park, Behavior of Aluminum in Solid Propellant Combustion, Georgia Inst. of Tech Atlanta School of Aerospace Engineering (1982).Google Scholar
- J. Crump, Aluminum combustion in composite propellants, interagency chemical rocket propulsion group, Combustion Instability Conference, CPIA Publication (1966).Google Scholar
- P. L. Micheli and W. G. Schmidt, Behavior of Aluminum in Solid Rocket Motors, Aerojet Solid Propulsion Co. (1977).Google Scholar
- J. Duterque, Experimental studies of aluminum agglomeration in solid rocket motors, International Journal of Energetic Materials and Chemical Propulsion, 4(1–6) (1997).Google Scholar
- Y. Fabignon, J.-F. Trubert, D. Lambert, O. Orlandi and J. Dupays, Combustion of aluminum particles in solid rocket motors, 39th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit (2003) 4807.Google Scholar
- S. Gallier, A stochastic pocket model for aluminum agglomeration in solid propellants, propellants, explosives, pyrotechnics, An International Journal Dealing with Scientific and Technological Aspects of Energetic Materials, 34(2) (2009) 97–105.Google Scholar
- V. A. Babuk, V. A. Vassiliev and V. V. Sviridov, Formation of condensed combustion products at the burning surface of solid rocket propellant, V. Yang, T. B. Brill and W. Z. Ren (eds.), Progress in Astronautics and Aeronautics: Solid Propellant Chemistry, Combustion, and Motor Interior Ballistics, 185 (2000) 749–776.Google Scholar