Email this article Local velocities of hot-spot combustion front in HMX
- Authors: Marshakov V.N.1, Melik-Gaykazov G.V.1
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Affiliations:
- Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
- Issue: Vol 14, No 1 (2021)
- Pages: 59-67
- Section: Articles
- URL: https://journals.rcsi.science/2305-9117/article/view/286570
- DOI: https://doi.org/10.30826/CE21140107
- ID: 286570
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Abstract
The mechanism of HMX combustion at pressures of 0.05–5.0 MPa is investigated. Itis shown that HMX burns in the focal (hot-spot) mode. In the article “HMX combustion mechanism” byV. N. Marshakov, V. G. Krupkin, and S. A. Rashkovsky (2020. Russ. J. Phys. Chem. B 14(6):934–939. doi: 10.1134/S1990793120060111), the scale of inhomogeneity of the combustion surface — the characteristic size of hot spots is determined. The dependence of the size of the hot spots on the average burning rate of the sample is obtained. In the present article, the temperature distributions in the combustion wave obtained using thermocouples are analyzed. The local burning rates are obtained from the analysis of temperature distributions in the condensed phase (close to the Mikchelson distribution). It is shown that the scatter of the burning rate values is explained by the registration of the velocity at different points of the transverse wave front. The values of the local burning rates exceeding the average burning rate are caused by the elevated initial temperature of the sample ahead of the flame front and the smaller values are explained by the curvature of the flame front and by the buckling mode of combustion.
About the authors
Vladimir N. Marshakov
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Author for correspondence.
Email: marsh_35@mail.ru
Doctor of Science in Physics and Mathematics, Chief Researcher
Russian Federation, 4, Kosygin St., Moscow, 119991Georgy V. Melik-Gaykazov
Semenov Federal Research Center for Chemical Physics of the Russian Academy of Sciences
Email: marsh@chph.ras.ru
Candidate of Science in Physics and Mathematics, Senior Engineer
Russian Federation, 4, Kosygin St., Moscow, 119991References
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