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Hot surface ignition dynamics in hydrogen-air mixtures near the flammability limits
| Content Provider | Semantic Scholar |
|---|---|
| Author | Boeck, Lorenz R. Melguizo-Gavilanes, Josué Shepherd, Joseph E. |
| Copyright Year | 2017 |
| Abstract | Ignition of premixed hydrogen-air from a hot surface in a closed vessel is considered with a particular focus on explosion dynamics near the flammability limits. The terms flammability limit and explosion limit describe two different limits of interest: the former evaluates the general possibility to establish a self-sustained flame in a given mixture, whereas the latter delineates explosions with negligible and strong pressure increase. For premixed hydrogen-air, the lower and upper flammability limits are XH2 = 4.0% and XH2 = 75.0%, respectively. The lower explosion limit (8%) differs from the lower flammability limit, whereas the upper limits coincide. Between the lower flammability limit and the lower explosion limit, cyclic flame propagation has been observed [1]. The present work extends this study using a combined experimental and numerical approach. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.icders.org/ICDERS2017/abstracts/ICDERS2017-1100.pdf |
| Alternate Webpage(s) | http://shepherd.caltech.edu/EDL/publications/reprints/Boecketal02_ICDERS2017.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
