Effect of Transient Heat Transfer on Metal Particle Ignition

Abstract- Ignition and combustion of metal particles are the issues of interest for many industrial and aerospace applications. When simulating ignition and combustion of metal particles using available standard models, a number of simplifying assumptions are usually adopted, which are not always justified. The objective of this work is to develop a new particle heating model with the correction factors to the Newton law taking into account transient heat ransfer to a particle and nonuniform temperature distribution inside the particle. The new particle heating model was shown to correlate mu h better with detailed numerical calculations than the standard model. The transient heating effects were proved o b im ortant for the problem of solid particle ignition in the oxidizer gas. 1