Journal of Mechanical Science and Technology

, Volume 33, Issue 11, pp 5303–5309 | Cite as

An agglomeration model: Influence of proximity of particles on agglomeration

  • Hyoungjoon Kwon
  • Jisang Yoon
  • Soonho SongEmail author
  • Seungwon Ko


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.


Agglomeration 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


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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.


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Copyright information

© KSME & Springer 2019

Authors and Affiliations

  • Hyoungjoon Kwon
    • 1
  • Jisang Yoon
    • 1
  • Soonho Song
    • 1
    Email author
  • Seungwon Ko
    • 2
  1. 1.Department of Mechanical EngineeringYonsei UniversitySeoulKorea
  2. 2.Agency for Defense DevelopmentYuseong-gu, DaejeonKorea

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