Delayed thermal explosion in flammable gas containing fuel droplets: Asymptotic analysis
2004
The problem of thermal explosion in a flammable gas mixture with addition of volatile fuel droplets is studied based on the asymptotic method of integral manifolds. The model for the radiative heating of droplets takes into account the semitransparency of droplets. A simplified model for droplet heat-up is used. The results of the analysis are applied to the modelling of thermal explosion in diesel engines. Two distinct dynamical situations have been considered, depending on the initial droplet concentration. These are 'far zone' (small initial liquid volume fraction and small droplet radii) and 'near zone' (large initial liquid volume fraction and large droplet radii)
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