Document Type
Article
Publication Date
2014
Abstract
This paper presents a direct numerical method based on gas dynamic equations to predict pressure evolution during the discharge of nanoenergetic materials. The direct numerical method provides for modeling reflections of the shock waves from the reactor walls that generates pressure-time fluctuations. The results of gas pressure prediction are consistent with the experimental evidence and estimates based on the self-similar solution. Artificial viscosity provides sufficient smoothing of shock wave discontinuity for the numerical procedure. The direct numerical method is more computationally demanding and flexible than self-similar solution, in particular it allows study of a shock wave in its early stage of reaction and allows the investigation of “slower” reactions, which may produce weaker shock waves. Moreover, numerical results indicate that peak pressure is not very sensitive to initial density and reaction time, providing that all the material reacts well before the shock wave arrives at the end of the reactor.
Recommended Citation
Martirosyan, Karen S., et al. “Fluid Dynamic Modeling of Nano-Thermite Reactions.” Journal of Applied Physics, vol. 115, no. 10, American Institute of Physics, Mar. 2014, p. 104903, doi:10.1063/1.4867936.
Publication Title
Journal of Applied Physics
DOI
10.1063/1.4867936
Comments
© 2014 AIP Publishing LLC. Original published version available at https://doi.org/10.1063/1.4867936