Measurements of Turbulent Flame Speed and Integral Length Scales in a Lean Stationary Premixed Flame
Författare
Summary, in English
Turbulent premixed natural gas - air flame velocities have
been measured in a stationary axi-symmetric burner using LDA. The flame was stabilized by letting the flow retard toward a stagnation plate downstream of the burner exit. Turbulence was generated by letting the flow pass through a plate with drilled holes. Three different hole diameters were used, 3, 6 and 10 mm, in order to achieve different turbulent length scales. Turbulent integral length scales were measured using two-point LDA and the stretching in terms of the Karlovitz number could be estimated from these measurements. The results support previous studies indicating that stretching reduces the flame speed.
been measured in a stationary axi-symmetric burner using LDA. The flame was stabilized by letting the flow retard toward a stagnation plate downstream of the burner exit. Turbulence was generated by letting the flow pass through a plate with drilled holes. Three different hole diameters were used, 3, 6 and 10 mm, in order to achieve different turbulent length scales. Turbulent integral length scales were measured using two-point LDA and the stretching in terms of the Karlovitz number could be estimated from these measurements. The results support previous studies indicating that stretching reduces the flame speed.
Avdelning/ar
Publiceringsår
1998
Språk
Engelska
Publikation/Tidskrift/Serie
SAE technical paper series
Volym
107
Issue
SAE Technical Paper 981050
Fulltext
- Available as PDF - 213 kB
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Dokumenttyp
Artikel i tidskrift
Förlag
Society of Automotive Engineers
Ämne
- Other Mechanical Engineering
- Energy Engineering
Nyckelord
- Combustion
- Premixed Flame
- Turbulent Flame Speed
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0148-7191