Numerical evaluation of the carbon-water reaction in a coal-water fueled engine

A numerical simulation for a coal-fueled reciprocating engine was modified and utilized for investigating the role of the coal-water reaction in the ignition and combustion processes. The numerical simulation includes individual models for describing the fuel-air mixing process, cylinder heat transfer, droplet evaporation and particle devolatilization and combustion. The particle combustion model was modified to include a third surface reaction between carbon and water. The sensitivity of the model results to kinetic and diffusion rate constants and to the fuel atomization model were investigated.