Computer-aided simulation of fire-tube boiler emergency operation

Physical processes in an inflatable furnace during the emergency operation mode of fire-tube boiler were simulated using the ANSYS Multiphysics 12.1.4 engineering software. Finite volume method and Euler method were used in conjunction with the implicit Pressure Based algorithm. Study results can diagnose and predict boiler failures connected with increasing of impasse aerodynamic resistance. Simulation has shown that entering the amount of coolant into combustion volume results in fan inability to overcome the resistance of the boiler duct. The accuracy of the simulation results is confirmed by visual inspection of emergency boilers. Results shown in graphs can significantly expand on existing concepts of reversing flame aerodynamics.