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Direct Numerical Simulations Of Ignition Of A Lean N-Heptane/Air Mixture With Temperature Inhomogeneities At Constant Volume: Parametric Study, Chun Sang Yoo, Tianfeng Lu, Jacqueline Chen, Chung K. Law
Direct Numerical Simulations Of Ignition Of A Lean N-Heptane/Air Mixture With Temperature Inhomogeneities At Constant Volume: Parametric Study, Chun Sang Yoo, Tianfeng Lu, Jacqueline Chen, Chung K. Law
US Department of Energy Publications
The effect of thermal stratification on the ignition of a lean homogeneous n-heptane/air mixture at constant volume and high pressure is investigated by direct numerical simulations (DNS) with a new 58- species reduced kinetic mechanism developed for very lean mixtures from the detailed LLNL mechanism (H.J. Curran et al., Combust. Flame 129 (2002) 253–280). Two-dimensional DNS are performed in a fixed volume with a two-dimensional isotropic velocity spectrum and temperature fluctuations superimposed on the initial scalar fields. The influence of variations in the initial temperature field, imposed by changing the mean and variance of temperature, and the ratio of turbulence …