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Klingmann, Jens; Johansson, Bengt (1998)
Publisher: Society of Automotive Engineers
Languages: English
Types: Article
Subjects: Premixed Flame, Turbulent Flame Speed, Other Mechanical Engineering, Combustion, Energiteknik, Annan maskinteknik, Energy Engineering

Classified by OpenAIRE into

arxiv: Physics::Fluid Dynamics, Physics::Chemical Physics
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.

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