Volume 28 Issue 5
May  2013
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ZHI Shi-jun, SUN Bing, ZHANG Jian-wei. Estimation of thermal conductivity of solid propellants based on particle packing model[J]. Journal of Aerospace Power, 2013, 28(5): 1187-1191.
Citation: ZHI Shi-jun, SUN Bing, ZHANG Jian-wei. Estimation of thermal conductivity of solid propellants based on particle packing model[J]. Journal of Aerospace Power, 2013, 28(5): 1187-1191.

Estimation of thermal conductivity of solid propellants based on particle packing model

  • Received Date: 2012-05-31
  • Publish Date: 2013-05-28
  • To better estimate the thermal conductivity of solid propellants,the molecular dynamics method was adopted to match the size distribution and volume fraction of solid propellants.The finite element method was employed to compute the steady heat conduction of solid propellant meso-scale models.According to the homogenization method,the mean temperature and mean heat flux were calculated.Based on the mean temperature,mean heat flux and steady heat conduction equation,the effective thermal conductivities of two- and three-phase solid propellants were obtained.The error between the simulation result and test data of two-phase solid propellants is only 3.63%. The results show that the effects of particle size and random distribution of particles can be fully considered when the particle packing model is employed in the process of estimating the thermal conductivity of solid propellants. The particle packing model is more consistent with the micro-structural features of real solid propellant, and the results are accurate and reliable.

     

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