Thermal explosion characteristics of a combustible gas containing fuel droplets

This paper investigated the critical ignition conditions of combustible gas containing liquid fuel droplets. The analysis is done based on the criteria of the thermal explosion theory. It includes analytical and numerical solutions of modeling equations of fuel droplets heating and evaporation by co...

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Autor principal:	Saad A. El-Sayed
Formato:	article
Lenguaje:	EN
Publicado:	SAGE Publishing 2021
Materias:	Mechanical engineering and machinery TJ1-1570 Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/ae2f74203de24d759d31a838c9c9b1e2
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spelling	oai:doaj.org-article:ae2f74203de24d759d31a838c9c9b1e22021-12-02T07:35:05ZThermal explosion characteristics of a combustible gas containing fuel droplets1756-828510.1177/17568277211057360https://doaj.org/article/ae2f74203de24d759d31a838c9c9b1e22021-12-01T00:00:00Zhttps://doi.org/10.1177/17568277211057360https://doaj.org/toc/1756-8285This paper investigated the critical ignition conditions of combustible gas containing liquid fuel droplets. The analysis is done based on the criteria of the thermal explosion theory. It includes analytical and numerical solutions of modeling equations of fuel droplets heating and evaporation by convection and radiation from the surrounding reactive hot gas. The exothermic reaction is usually modeled as a single-step reaction obeying an Arrhenius temperature dependence. The thermal conductivity of the fuel droplet is dependent on temperature. The analytical solution produced relations between the main critical characteristic parameters in all planes of the solution. The results obtained from investigating the effect of the characteristic parameters on the explosion behavior of gas and fuel droplets and the thermal radiation proved that both of them are significant. The study proved that the criticality definitions of the thermal explosion of a single-phase system can be used effectively and efficiently to determine the critical conditions of a multi-phase system. Finally, the application of the numerical solutions of the modeling equations was used to analyze the explosion characteristics of a diesel fuel spray system.Saad A. El-SayedSAGE PublishingarticleMechanical engineering and machineryTJ1-1570Motor vehicles. Aeronautics. AstronauticsTL1-4050ENInternational Journal of Spray and Combustion Dynamics, Vol 13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Mechanical engineering and machinery TJ1-1570 Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	Mechanical engineering and machinery TJ1-1570 Motor vehicles. Aeronautics. Astronautics TL1-4050 Saad A. El-Sayed Thermal explosion characteristics of a combustible gas containing fuel droplets
description	This paper investigated the critical ignition conditions of combustible gas containing liquid fuel droplets. The analysis is done based on the criteria of the thermal explosion theory. It includes analytical and numerical solutions of modeling equations of fuel droplets heating and evaporation by convection and radiation from the surrounding reactive hot gas. The exothermic reaction is usually modeled as a single-step reaction obeying an Arrhenius temperature dependence. The thermal conductivity of the fuel droplet is dependent on temperature. The analytical solution produced relations between the main critical characteristic parameters in all planes of the solution. The results obtained from investigating the effect of the characteristic parameters on the explosion behavior of gas and fuel droplets and the thermal radiation proved that both of them are significant. The study proved that the criticality definitions of the thermal explosion of a single-phase system can be used effectively and efficiently to determine the critical conditions of a multi-phase system. Finally, the application of the numerical solutions of the modeling equations was used to analyze the explosion characteristics of a diesel fuel spray system.
format	article
author	Saad A. El-Sayed
author_facet	Saad A. El-Sayed
author_sort	Saad A. El-Sayed
title	Thermal explosion characteristics of a combustible gas containing fuel droplets
title_short	Thermal explosion characteristics of a combustible gas containing fuel droplets
title_full	Thermal explosion characteristics of a combustible gas containing fuel droplets
title_fullStr	Thermal explosion characteristics of a combustible gas containing fuel droplets
title_full_unstemmed	Thermal explosion characteristics of a combustible gas containing fuel droplets
title_sort	thermal explosion characteristics of a combustible gas containing fuel droplets
publisher	SAGE Publishing
publishDate	2021
url	https://doaj.org/article/ae2f74203de24d759d31a838c9c9b1e2
work_keys_str_mv	AT saadaelsayed thermalexplosioncharacteristicsofacombustiblegascontainingfueldroplets
_version_	1718399357287399424

Thermal explosion characteristics of a combustible gas containing fuel droplets

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