Measurements of Turbulent Flame Speed and Integral Length Scales in a Lean Stationary Premixed Flame

Paper #:
  • 981050

Published:
  • 1998-02-23
Citation:
Klingmann, J. and Johansson, B., "Measurements of Turbulent Flame Speed and Integral Length Scales in a Lean Stationary Premixed Flame," SAE Technical Paper 981050, 1998, https://doi.org/10.4271/981050.
Pages:
9
Abstract:
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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