Abstract ▼ AI-Helper

The swirl atomizer is widely used in industrial combustion systems, whose combustion characteristics are influenced by atomization instability. In this study, atomization characteristics of the simplex swirl nozzle have been experimentally investigated. Experiment parameters are geometry changes of ...

The swirl atomizer is widely used in industrial combustion systems, whose combustion characteristics are influenced by atomization instability. In this study, atomization characteristics of the simplex swirl nozzle have been experimentally investigated. Experiment parameters are geometry changes of the nozzle with orifice diameter, orifice length, diameter of entry ports to swirl chamber, and cone angle of the swirl chamber. The water and diesel are used for working fluids operated on 293K and 273K, respectively. Injection pressure were chosen for operating conditions and varied in the range from 0.1 MPa to 1.1 MPa. The formation of air core and spray cone angle were captured by a high speed camera and SMD variation was measured by Malvern Particle Sizer. The air core easily formed with increasing orifice diameter, increasing orifice length and decreasing conversing angle of the swirl chamber. However the air core is hard to be formed when the entry port diameter of swirl chamber increases.

Keyword