Flow Field Simulation of the Oil-Burned Pressure Boiler Burner

The flow process of tangential vane burner of pressure oil-burned boiler was numerically simulated with realizable k-ε model. Burner flow field boundary, air axial velocity and air tangential velocity were measured. The measure was done under cool condition, at 28% load and 0.1MPa, the simulation was done under the same conditions. The calculation had a good agreement with the experiment. Flow field was calculated under cool condition, when pressure was respective 0.1MPa, 0.2MPa, 0.3MPa, 0.4MPa. Recirculation zone length and maximum diameter both decreases with pressure increase. Axial velocity decreases with pressure increase. Flow field was calculated under heat condition, recirculation zone length of heat condition is 2.67 times longer than under cool condition; recirculation zone maximum diameter is 2.53 times longer than under cool condition; recirculation zone position is ahead 200mm than under cool condition.