combustion simulation and modelling 42 biomass 38 fuels (chemistry) 18 combustion physics 17 wastes 13 coal 13 more ... steam boilers 11 internal combustion motors 11 optimization 10 waste disposal services 9 combustion products 9 power engineering 8 fluid boilers 8 physical chemistry 8 carbon dioxide 8 mechanical engineering 8 heating 8 biofuels 7 issues 7 solid fuel boilers 7 pyrolysis 7 heat-generating plants 6 thermodynamics 6 solid fuels 6 chemical technology 5 brown coal 5 imissions 5 machines 5 environmental pollution 5 less ...