Rayleigh scattering has been used to measure simultaneously two-point density fluctuations in a range of turbulent premixed flames. V-shaped ethylene/air and methane/air flames stabilized on a 1 mm rod were studied at equivalence ratios of 0.6 and 0.8 with approach flow mean velocities of 5 m/s and
On defining the turbulent burning velocity in premixed V-shaped turbulent flames
β Scribed by R.K. Cheng; T.T. Ng
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 755 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0010-2180
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β¦ Synopsis
Turbulent burning velocity St is determined for six premixed V-shaped turbulent flames. In addition to defining St with respect to the conventional flame surface, a definition based on an effective flame orientation is proposed. The results based on the flame surface increase significantly with distance from the flame stabilizer. In general, they compare quite poorly with experimental correlation obtained by others. However, the results based on the effective flame orientation are more consistent and provide better comparison. These results indicate that the flame surface method is not a consistent method for deducing the turbulent burning velocity in this flame configuration.
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