Influence of pressure and temperature on laminar burning velocity and Markstein number of kerosene Jet A-1: Experimental and numerical study

摘要: Abstract Turbulent flames are utilised in almost all applications employing combustion. Thus, better understanding of the combustion process is key for increasing efficiency fuel consumption and reducing environmental footprint future combustors. As turbulent flame velocity depends on laminar burning intensity turbulence, can be considered as a crucial parameter characterisation. Since basically wrinkled (flamelet approach), effect stretch (caused by turbulence) propagation must also considered. The Markstein number, which quantifies response to stretch, employed this purpose. Additionally, number an indicator front stability. experimental data conventional liquid – kerosene Jet A-1 scarce, especially at elevated pressure conditions. Identification parameters pressures very important such conditions closer real operational ones. embodies fundamental information diffusivity, reactivity exothermicity given mixture, it often utilized validation reaction mechanisms. characteristics investigated experimentally explosion vessel. For purpose optical laser method based Mie-scattering light smoke particles. Within study influence three parameters: initial temperature, mixture composition investigated. experiments performed five different pressures: 0.1, 0.2, 0.4, 0.6 0.8 MPa; temperatures: 373, 423 473 K; range equivalence ratios 0.67–1.43. Along with experiments, two mechanisms used evaluate their ability predict observed velocities. results compared discussed detail.