Affiliation:
1. Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian, People's Republic of China
2. School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024, People's Republic of China
Abstract
Nowadays, prefilming atomizers have been widely applied in aero-engine, industrial fields, and agricultural irrigation. In this study, atomization characteristics of the prefilming atomizers with structured lips have been investigated. The influence of eight structured lips on the spray breakup process has been measured using high-speed planner laser introduced fluorescence and particle/droplet image analysis in the planner prefilming air-blast atomizer. Synchronously, multi-directional visualization was used to measure hydrodynamic behavior. Rec-3 with a depth of 1 mm, a width of 1 mm, and a pitch of 0.5 mm has the smallest droplet size although it has medium breakup length and ligament velocity. For all studied structured prefilmers, rectangle and triangle structured lips performed good atomization effect than no structured lips except tri-1.
Funder
National Natural Science Foundation of China
Fundamental Research Funds for the Central Universities
Subject
Condensed Matter Physics,Fluid Flow and Transfer Processes,Mechanics of Materials,Computational Mechanics,Mechanical Engineering
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