Research of critical ambient temperature of cylindrical fireworks and crackers

Autor:	Zhiming Du, Zhiyue Han, Quan Xia, Lingling Ji, Zerong Guo
Rok vydání:	2013
Předmět:	Partial differential equation Steady state Biot number Chemistry Shell (structure) Fireworks Mechanics Condensed Matter Physics Critical Ambient temperature Forensic engineering Thermal explosion Physical and Theoretical Chemistry MATLAB computer computer.programming_language
Zdroj:	Journal of Thermal Analysis and Calorimetry. 115:1787-1792
ISSN:	1588-2926 1388-6150
DOI:	10.1007/s10973-013-3513-5
Popis:	To study the influence of temperature on cylindrical fireworks and crackers in production and storage, this article establishes a physical and mathematical model of thermal explosion critical ambient temperature of finite cylindrical fireworks with shell based on two-dimensional steady state thermal explosion theory. The numerical program is written by difference method and Newton-homotopy method. The partial differential equations of thermal explosion model are calculated in Matlab. Comparison of numerical solutions and classical solutions proves the accuracy of model. The influence of Biot number of each surface and length diameter ratio on critical ambient temperature is analyzed. It is founded that the scope of length diameter ratio is \( 0.08 < H < 4.3 \) when Biot number tends to infinite. The thermal safety temperature of the fireworks without inner barrel when it is stored individually is obtained. This provides theoretical support for the safety of fireworks and crackers in production, storage transportation, and setting off process.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::932cb891e11acc06ba1aab4eae31437f https://doi.org/10.1007/s10973-013-3513-5 Zobrazit plný text záznamu Full text from SpringerLink