Theoretical analysis of flame propagation in meso and microscale channels

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Extinction and flame propagation in a meso and microscale channels are investigated analytically. Emphasis was paid to the coupling of wall heat loss, wall preheating, external heat loss and chemical reaction. The results showed that, wall thermal properties, channel width and flow velocity have dramatic effects on the flame propagation and lead to multiple flame regimes and extinction limits. With the decrease of channel width, flame reaches its first quenching limit, the so called critical quenching distance. However, with a further decrease of channel width, the results show that there exists a slow burning flame. With the increase of wall heat loss the speed of the slow burning flame slightly decreases and eventually reaches its second burning limit. With the change of the flow velocity, the results show that sub-limit flame can only exist at flow velocity larger than a critical value. At moderate flow velocity, flame speed increases with the increase of flow speed. At very large flow velocity, flame will be blown off. The above results are confirmed from the recent experimental data.

Original languageEnglish (US)
Title of host publicationProceedings of the 2003 ASME Summer Heat Transfer Conference, Volume 2
PublisherAmerican Society of Mechanical Engineers
Pages177-183
Number of pages7
ISBN (Print)0791836940, 9780791836941
DOIs
StatePublished - Jan 1 2003
Event2003 ASME Summer Heat Transfer Conference (HT2003) - Las Vegas, NV, United States
Duration: Jul 21 2003Jul 23 2003

Publication series

NameProceedings of the ASME Summer Heat Transfer Conference
Volume2003

Other

Other2003 ASME Summer Heat Transfer Conference (HT2003)
CountryUnited States
CityLas Vegas, NV
Period7/21/037/23/03

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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