Abstract
Propagation characteristics of premixed laminar ethanol-air flames over the temperature range of 358-500 K and equivalence ratios from 0.7 to 1.4 are experimentally studied in a constant combustion bomb using a schlieren photography technique. By analyzing the relationship between the flame propagation speed and the flame stretch, the uristretched laminar burning velocities of ethanol-air flames are deduced. Combined the previous studies, an empirical formula for burning velocities of ethanol-air flame is proposed. By calculating the burning mass flux, the global activation temperature is determined and the Zeldovich numbers for ethanol-air laminar flames are estimated as a function of equivalence ratio. And then a general correlation of laminar burning velocity is obtained for ethanol-air mixtures. Comparison shows good agreements between this study and the previous results.
| Original language | English |
|---|---|
| Pages (from-to) | 469-474 |
| Number of pages | 6 |
| Journal | Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) |
| Volume | 25 |
| Issue number | 5 |
| State | Published - Sep 2007 |
Keywords
- Ethanol
- Laminar burning velocity
- Premixed laminar flame
- Stretch