| 제목 |
벽면충돌 가솔린 분무 모델 |
| 분야 |
열유체 및 공조시스템(HVAC) |
| 언어 |
Korean |
| 저자 |
박정규(건국대학교), 원영호(울산대학교), 김태완(울산대학교) |
| Key Words |
Atomization(미립화), Laser sheet visualization(레이저시트 가시화), Spray impinging(충돌분무), Modeling of spray(분무모델) |
| 초록 |
Most gasoline engines employ a port injection system to achieve the better fuel-air mixing. A part of injected fuels adheres to the wall or intake valve and forms a film of liquid fuel. The other is secondarily atomized by the spray-wall interaction. A better understanding of this interaction will help in designing injection systems and controlling the strategies to improve engine performance and exhaust emissions. In the present research, the spray-wall interaction was investigated by a laser sheet visualization method. The shape of sprays was pictured at various impinging velocities and angles. The fuel dispersion was estimated by fluorescence light, and the atomization was evaluated by the enlarged images of droplets. The experimental results were compared with model predictions which are based on OPT method. The model has been modified to have the better agreement with the experimental result, and was implemented in the KIVA- II code. |
| 원문(PDF) |
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