ORGANIC DUST IGNITION IN THE HIGH-TEMPERATURE FLOW BEHIND A SHOCK-WAVE

A theoretical model was developed to determine the ignition characteri stics of organic dust. in this model, an unsteady particle heat transf er equation with an Arrhenius type of reactive source term was coupled with the flow conservation equations. Theoretical results show the in fluence of dust concentration on the ignition delay time of wheat flou r dust. The flammability limits of wheat hour dust have also been esti mated. Results also show the effect of particle size on the ignition d elay time. The theoretical results were in reasonable agreement with m ost of the experimental data.