Flame Distribution and Attenuation in Narrow Channels Using Mathematical Software

Abstract

The article of given research presents the mathematical and computer modeling of flame attenuation in narrow channels for different fire extinguishing and explosion suppression compositions. Such kind of flame distribution and attenuation could be considered for different media and channels but in this case it was considered for narrow channels. The effect on the combustion reaction is possible with gas mixture components concentration reducing, cooling the combustion zone and slowing down of chain reactions with the help of a phlegmatizing or inhibiting substances, of which the most universal and perspective are powder materials. Therefore, a necessary condition for solving the problems of developing effective flame arresters is to find common indicators and properties of substances that can become criteria for their phlegmatizing ability. The computer model in MatLab was created for methane allowing the choice of diameter and length of channel and velocity of explosion suppression composition, showing the dependence of temperature on length of channel.

Phosphorum Slag and Phosphogypsum as Man-Made Industrial Waste for Creation of Modified Fire and Explosion-Suppressing Powder Compositions

“…Microscopic analysis of the samples was performed on a scanning electron microscope JEOL with the possibility of energy-dispersive analysis. In order to determine the optimal compositions of mixtures based on expired powder P-2AP with industrial waste, the mathematical model MATLAB was used [10,11].…”

“…Analyzing the results obtained, we came to the conclusion that the use in the proposed fire extinguishing compositions as the main component of expired powder P-2AP (which retained the main operational properties -fire extinguishing ability) and non-demanded waste phosphogypsum and electrothermophosphoric slag provide sufficiently high operational properties of the compositions at a very low cost. [11] Thus, the efficiency of the proposed fire and explosion-suppressing compositions is achieved, while making a significant contribution to the development of the system of rational use of natural resources, waste disposal, preservation of the ecological situation of the area, as well as the prevention of emergencies and emergencies at industrial dumps. Аннотация.…”