Naslov
Computational modeling of thermal ignition of energetic materials

Autori
Sućeska, Muhamed

Izvornik
Indian Institute of Space Science and Technology (IIST), 12. Feb, 2014, Trivandrun, India

Vrsta, podvrsta
Ostale vrste radova, ostalo

Godina
2014

Ključne riječi
explosives; self-ignition; thermal explosion; numerical modeling; energy balance equation

Sažetak
Explosive materials may undergo reaction of thermal decomposition. The rate of these reactions is temperature dependent ; the higher temperature of explosive the faster reactions. Thermal decomposition of explosives is accompanied by generation of certain amount of heat. Under certain conditions (high external temperature, large sample unfavourable conditions for heat transfer to surrounding) the heat generated in chemical reaction may begin to accumulate within sample, causing a self-accelerating increase of chemical reactions rate, and finally ignition of explosive. This phenomenon is known as “thermal explosion” or “self-ignition”. For the explosive community it is of great importance to predict theoretically whether or not an explosive material will ignite under given condition (specimen mass and shape, surrounding temperature, etc.). This can be done applying energy balance equation and kinetics of decomposition reaction. The lecture will provide background and principles of numerical modeling of thermal ignition. The solution of the energy balance equation by the finite-difference (FD) method will be discussed, as well as implementation different kinetic models of thermal decomposition (single-step and multi-step. Aa an example, the structure of a typical computer program for thermal ignition modeling will be described.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Kemijsko inženjerstvo

Napomena
POzvano predavanje na institutu

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