Author(s)

Lixin Mu ¹

Affiliation(s)

¹ Environmental and Safety Engineering, North University of China, Taiyuan, China

Corresponding Author

Lixin Mu

ABSTRACT

It is crucial for the preparation and performance study of fused-cast explosives to the quantitative determination of thermal conductivity, therefore, the search for a prediction method of their effective thermal conductivity has been of broad interest. The thermal conductivity of aluminium powder/TNT fused-cast explosives was investigated by numerical simulation, and a three-dimensional model of the particle-filled composite RVE was established based on DIGIMAT software, and a steady-state thermal analysis of the model was carried out using ANSYS Workbench software to investigate the impact of aluminium powder particles with different particle sizes and contents on the thermal conductivity and the effects of the mixed filler on the thermal conductivity enhancement effect of the composite when filled with the TNT matrix. The simulation results show that the theoretical thermal conductivity of Al/TNT increases exponentially with the increase of aluminium volume fraction; in the range of optimal particle size, it is more accessible to obtain composites with large thermal conductivity by filling large-size aluminium powders; in the case of low filler content, the numerical simulation results are in agreement with the results of the Maxwell-Eucken model in terms of the overall trend. The study shows that the described method can be used for predicting the thermal conductivity of Al/TNT composites.

KEYWORDS

Aluminium powder, TNT, Thermal conductivity, Finite element analysis

CITE THIS PAPER

Lixin Mu, Three-dimensional numerical simulation of thermal conductivity of aluminium powder/TNT fusion-cast explosives. Modern Physical Chemistry Research (2024) Vol. 4: 73-80. DOI: http://dx.doi.org/10.23977/mpcr.2024.040110.

REFERENCES

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[4] Pan, L., Zhang, L., He, G. (2022). Effect of graphene microstructure on thermal conductivity of tat-based composite explosives. Journal of Weapons and Equipment Engineering, 43(9), 338-342.
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