Modeling and calculation of thermal explosion time to ignition of cylindrical fireworks and crackers

Autor:	Zhihui Kou, Zerong Guo, Lingling Ji
Rok vydání:	2013
Předmět:	Partial differential equation Biot number Chemistry Fireworks Mechanics Condensed Matter Physics law.invention Ignition system law Theory of heat Forensic engineering Thermal explosion Boundary value problem Physical and Theoretical Chemistry MATLAB computer computer.programming_language
Zdroj:	Journal of Thermal Analysis and Calorimetry. 115:861-868
ISSN:	1588-2926 1388-6150
DOI:	10.1007/s10973-013-3278-x
Popis:	To analyze the thermal safety of cylindrical fireworks and crackers in storage and transportation, this article establishes a physical model and a mathematical model of thermal explosion time to ignition of finite cylindrical fireworks and crackers. And in order to simplify the thermal explosion model, effective Biot number about boundary condition is deduced according to the theory of heat transfer. The partial differential equation of thermal explosion model are calculated with difference method in Matlab program, to obtain the time to ignition as well as the temperature–time history before explosion system explodes. The rationality of effective Biot number and calculation method is proved through comparison of calculation solution and literature solution. Being the first to solve the problem of two-dimensional thermal explosion unsteady-state model of fireworks and crackers, where the upper surface, lower surface, and side surface have different heat dissipation conditions. Meanwhile, calculation steps were shown about a type of fireworks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::267e360f688918e0224c2ff0140c40d0 https://doi.org/10.1007/s10973-013-3278-x Zobrazit plný text záznamu Full text from SpringerLink