Laminar flame speeds of hydrocarbons with helium dilution at raised pressures and temperatures Conference Paper uri icon

abstract

  • Difficulties with flame stability arise when hydrocarbon fuels are burned with air at elevated pressures. The use of helium dilution abates these instabilities to allow the measurement of flame speeds at these elevated pressures. This study inspects the effects of said helium dilution at elevated temperatures and pressures to construct a reliable database for hydrocarbon mixtures at these conditions and to validate a chemical kinetics model. Seven different fuel and oxidizer mixtures were studied at 5 atm and 473 K including pure methane and both 80/20 and 60/40 blends of each methane/propane and methane/ethane. The model accurately predicts the flame speed data at each condition with high accuracy. Furthermore, the Lewis numbers and Markstein lengths explain the stable flames seen in this study. 2013 by The authors.

published proceedings

  • 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013

author list (cited authors)

  • Plichta, D., Petersen, E. L., Burke, S., & Curran, H.

complete list of authors

  • Plichta, D||Petersen, EL||Burke, S||Curran, H

publication date

  • August 2013