The adiabatic, unstrained, laminar flame speed, SL, is a fundamental combustion property, and a premier target for the development and validation of thermochemical mechanisms. It is one of the leading parameters determining the turbulent flame speed, the flame position in burners and combustors, and the occurrence of transient phenomena, such as flashback and blowout. At pressures relevant to gas turbine engines, SL is generally extracted from the continuous expansion of a spherical reaction front in a combustion bomb. However, independent measurements obtained in different types of apparatuses are required to fully constrain thermochemical mechanisms. Here, a jet-wall, stagnation burner designed for operation at gas turbine relevant conditions is presented, and used to assess the reactivity of premixed, lean-to-rich, methane–air flames at pressures up to 16 atm. One-dimensional (1D) profiles of axial velocity are obtained on the centerline axis of the burner using particle tracking velocimetry, and compared to quasi-1D flame simulations performed with a selection of thermochemical mechanisms available in the literature. Significant discrepancies are observed between the numerical and experimental data, and among the predictions of the mechanisms. This motivates further chemical modeling efforts, and implies that designers in industry must carefully select the mechanisms employed for the development of gas turbine combustors.
Measurements of the reactivity of premixed, stagnation, methane-air flames at gas turbine relevant pressures
Manuscript received June 27, 2018; final manuscript received July 17, 2018; published online October 17, 2018. Editor: Jerzy T. Sawicki.
Permission for use: The content of this paper is copyrighted by Siemens Canada Ltd. and is licensed to ASME for publication and distribution only. Any inquiries regarding permission to use the content of this paper, in whole or in part, for any purpose must be addressed to Siemens Canada Ltd. directly.
- Views Icon Views
- Share Icon Share
- Cite Icon Cite
- Search Site
Versailles, P., Durocher, A., Bourque, G., and Bergthorson, J. M. (October 17, 2018). "Measurements of the reactivity of premixed, stagnation, methane-air flames at gas turbine relevant pressures." ASME. J. Eng. Gas Turbines Power. January 2019; 141(1): 011027. https://doi.org/10.1115/1.4041125
Download citation file:
- Ris (Zotero)
- Reference Manager