The ignitability tests were based on ignition delay time versus temperature measurements using five different forest species: Pinus halepensis, Pistacia lentiscus, Cupressus sempervirens, Olea europaea, Cistus incanus.
Based on ignition, engines could be subdivided into those using spark ignition and those using compression ignition.
Overall, the study validates the premise that a convection diffusion based wildfire ignition model captures the anthropogenically-initiated wildfire ignition behavior better than the previously developed gravity model.
Statistics of ignition delay are computed to assess the Zel'dovich (1980) theory for the mode of combustion propagation based on ignition delay gradients.
Next, two explicit robust reduced reaction models based on ignition data (18-step) and on flame propagation data (15-step) are systematically developed and extensively validated for ignition delay time, flame propagation, and extinction predictions of C2H4/air, CH4/air, and H2/air systems over a wide range of equivalence ratios, initial temperatures, pressures, and strain rates.
The specific location point of each wildfire event was generated based on ignition susceptibility maps derived from Fig. 7e by using the acceptance-rejection method (Casella et al. 2004).
The code simulates two stages of sodium droplet combustion in the air using reaction rate based pre-ignition model and mass transfer based vapour phase combustion model to predict the ignition and combustion of individual sodium droplets.
The ignition response was predicted based on an ignition criterion of effective plastic work.
The first examined the reaction space (based on the ignition delay distribution within the charge prior to ignition) for both breathing strategies to quantify the inherent reactivity stratification.
(4) The measured ignition locations were of the same order of magnitude as values based on calculated ignition time scales and mean jet exit velocities, but with some additional variability.
Recently, Shy and his co-workers reported a turbulent ignition transition based on measurements of minimum ignition energies (MIE) of lean premixed turbulent methane combustion for a wide range of equivalence ratios.
