Abstract
A computational study on expanding spherical premixed flames was conducted to investigate the dynamics of the stretch-affected, one-dimensional, and pulsating instability. Using a time-dependent, spherically symmetric code with detailed chemistry, transport, and radiation submodels, rich H2/air mixtures were investigated. It was shown that the dynamics of spherically expanding flames was significantly different than that for planar flames. It was suggested that any consideration of flame propagation ignition must address the competition between excess enthalpy from external energy deposition and stretch/heat-loss-affected pulsation instability.
Original language | English (US) |
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Pages (from-to) | 559-578 |
Number of pages | 20 |
Journal | Combustion Science and Technology |
Volume | 177 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2005 |
All Science Journal Classification (ASJC) codes
- General Chemistry
- General Chemical Engineering
- Fuel Technology
- Energy Engineering and Power Technology
- General Physics and Astronomy
Keywords
- Flame propagation
- Flammability limits
- Ignition
- Instability
- Spherical flames