Simulation of the deflagration-to-detonation impact on a copper-based furnace injector

Abstract

The deflagration-to-detonation transition (DDT) is accompanied by a strong pressure wave that can provide an adverse effect on nearby structures. The pressure generated from multiple detonative pulses is strong enough to cause metal surface erosion and bulk edge chipping. In this work, we investigate the damaging effect of the DDT phenomena and apply hydrocode simulation to evaluate the structural damage to a pulverized coal injector made of copper used in a pulverized coal-oxygen combustion furnace. Experimental conditions are imposed to improve the damage model of a metal injector exposed to multiple detonation pulses.