Methods for Calculating the Isentropy of Detonation Products based on Cylinder Test Data: Analysis and Comparison
A. I. Akhmetzyanov1, V. A. Virchenko1, A. A. Kazak1, S. V. Shakhmaev2
1«Tekhnolog» Special Design and Technology Bureau, St. Petersburg, Russia
2All-Russian Scientific Research Institute of Technical Physics (VNIITF), Snezhinsk, Russia
Keywords: Composition B, detonation product isentrope, calculation methods, equation of state for detonation products, cylinder test
Abstract
This article presents a review and comparison of methods for calculating detonation product isentropes based on experimental data from a cylinder test using the foreign-made composite explosive Composition B as an example. It is shown that the classical direct numerical modeling method, despite its clear advantages in the accuracy and reproducibility of experimental results, is extremely labor-intensive and significantly depends on the operator's skill in successive approximations and coefficient selection, as well as on the problem settings and approaches used. The analytical method for calculating detonation product isentropes yields significant errors and is not yet suitable for practical application. An alternative is the approach proposed by researchers at the Joint Institute of Chemical Physics of the USSR Academy of Sciences and tested in this study.
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