| 제목 |
GDI 와류 분사노즐에 의한 비증발 분무의 가시화 및 수치해석 |
| 분야 |
열유체 및 공조시스템(HVAC) |
| 언어 |
Korean |
| 저자 |
원영호(울산대학교), 강수구(울산대학교) |
| Key Words |
GDI swirl injector(GDI 와류부나 노즐), Spray modeling(분무 모델), Spray visualization(분문 가시화), Gasoline direct injection engine(직접분사식 가솔린엔진) |
| 초록 |
Predictions of the fuel spray dispersion and mixing processes are very important to improve the fuel consumption and exhaust emissions in GDI engines. Numerical and experimental analysis of the sprays with a swirl injector have been A conducted. A numerical analysis is carried out using KIVA-II code with modified spray models. Experimental measurements are performed to show the global spray images and the local images near nozzle tip using laser sheet visualization technique. Computed and measured spray characteristics such as spray width, tip penetration arc compared, and good agreements can be achieved. The spray head vortex is stronger as the injection pressure increase, but numerical calculations cannot show the head vortex properly. |
| 원문(PDF) |
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