Simulation of micro size coal particles MILD combustion

At this work, 3D combustion of coal pulverised particles in the MILD state has been simulated by OpenFOAM open ‎source code. The target of this work is the study of partially stirred reactor combustion model in simulating of coal particles MILD combustion. This model can consider the finite rate chemistry. According to studies, there have been no reports on this subject so far.This numerical study is done with criterion of IFRF experimental results and the conservative equations are solved simultaneously. Interaction between phases by Euler-Lagrange approach, interaction between turbulence and combustion in continous phase by Partially stirred reactor, production/consumption of species by 4 step Jones and Lindstedt global mechanism has been modeled. Results show that forenamed models specially partially stirred reactor can estimate the velocity, temperature, and species in MILD combustion of coal particles truely. Accuracy of temperature is better than species. Global kinetic could be one reason of this case.