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Adiabatic thermal explosion of a gas-solid mixture
Faculty
Not Specified
Year:
2004
Type of Publication:
Article
Pages:
237-256
Authors:
El-Sayed, SA
DOI:
10.1080/00102200490256144
Journal:
COMBUSTION SCIENCE AND TECHNOLOGY TAYLOR \& FRANCIS LTD
Volume:
176
Research Area:
Thermodynamics; Energy \& Fuels; Engineering
ISSN
ISI:000188768600004
Keywords :
Adiabatic thermal explosion , , gas-solid mixture
Abstract:
The critical conditions of the adiabatic explosion problem of a gas-solid (dusty gas) mixture is presented. The definitions used for the homogeneous gas to determine criticality are used here for the gas-solid mixture. This work showed that the classical definition of the critical point can be adopted and modified to determine the critical condition in gamma-eta and gamma-theta domains. It was also found that using the definition of criticality as an inflection point in the critical trajectory in the theta-eta plane gives the same results as given by the classical definition of criticality. It is interesting to see that the critical and maximum points in the gas temperature-concentration domain could coincide. It was found that the presence of a solid produces more than one critical temperature. The limiting cases of the problem are also offered. The numerical solution showed that the supercritical trajectory shows a thermal runaway for the gas over the solid at the end of reaction.
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