Abstract
The forced flow driven flame spread behavior along an array of discrete wooden fuel elements was experimentally investigated, which could be an important step to understanding the flow-flame interactions that govern fire spread. Fuel arrays with five different spacings (0.75, 0.875. 1.00, 1.125, and 1.25 cm) were subject to flow speeds ranging from 2.2 to 4.3 m/s at approximately 0.2 m/s intervals. For spacing-flow speed conditions tested in the current study, the flame spread behavior was categorized into three different regimes, continuous, discrete, and quenching, and the regimes were presented in a flammability map. Visual analysis of top and side view video data were used to describe the changing flame behavior and increasing discretization of the overall flame structure as the flow speed increases. An analysis of the fluid mechanics and heat transfer conditions revealed a correlation between the Stanton number (St), the Damkohler number (Da), and the onset of flame instabilities and quenching.
| Original language | English |
|---|---|
| Pages (from-to) | 5109-5117 |
| Number of pages | 9 |
| Journal | Proceedings of the Combustion Institute |
| Volume | 38 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2021 |
| Event | 38th International Symposium on Combustion, 2021 - Adelaide, Australia Duration: 2021 Jan 24 → 2021 Jan 29 |
Bibliographical note
Publisher Copyright:© 2020 The Combustion Institute.
Keywords
- Flame spread
- Flow-flame interaction
- Quenching
- Wind-driven fire
- Wood combustion
ASJC Scopus subject areas
- General Chemical Engineering
- Mechanical Engineering
- Physical and Theoretical Chemistry