| 제목 |
GDI 인젝터 노즐 설계 변수에 따른 비정상 유동 특성 |
| 분야 |
가솔린엔진 |
| 언어 |
Korean |
| 저자 |
봉선우(자동차부품연구원), 이헌균(자동차부품연구원), 윤권덕((주)기가텍) |
| Key Words |
GDI(가솔린 직분사), Cavitation(공동상), Multiphase(다상), VOF(유체부피), CFD(산유체역 학), UDF(사용자 정의 함수) |
| 초록 |
Recently, studies on the dynamic behavior of injector nozzles are actively underway, and studies on the flow characteristics in the nozzles have been actively conducted through the CFD due to the improved computer function. In this study, flow characteristics according to injector nozzle design parameters were analyzed by using commercial analysis program. In order to investigate cavitation and the behavior of air and liquid in the nozzle due to the sudden pressure change inside nozzle, multiphase flow analysis using VOF was used. In addition, UDF function was used to control the force acting on the ball that changes with time and the moving distance of the ball. Remeshing was performed periodically using the dynamic mesh function. |
| 원문(PDF) |
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