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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1993.11
- 수록면
- 34 - 45 (12page)
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초록· 키워드
오류제보하기
This study aims to analyze the mixing characteristics of hydrogen considered as a new fuel for internal combustion engines. As the physical property of helium gas is similar to that of hydrogen, helium gas was used in this study.
To analyze the steady and unsteady behavior of jet, helium gas was injected into the stationary atmosphere
at the normal temperature and pressure.
Concentration of helium gas in the center of jet flow is in inverse proportion with axial distance from
the nozzle tip. This agrees with the free jet theory of Schlichting.
The relative equation for dimensionless concentration to radial/axial distance the axial distance of potential core region, the cone angle a of the jet flow and the relative equation for arriving distance of the front of jet flow to the lapse of time are obtained. But free jet theory of Schlichting in the dimensionless concentra- tion is not in agreement with the present experimental results of the distance of the radial direction. It needs more study. When the arrival frequency of jet flow is used as a parameter, the transition area changing from unsteady flow area into steady flow area becomes gradually wider downstream, but its ratio for the whole unsteady flow area gradually decreases.
To analyze the steady and unsteady behavior of jet, helium gas was injected into the stationary atmosphere
at the normal temperature and pressure.
Concentration of helium gas in the center of jet flow is in inverse proportion with axial distance from
the nozzle tip. This agrees with the free jet theory of Schlichting.
The relative equation for dimensionless concentration to radial/axial distance the axial distance of potential core region, the cone angle a of the jet flow and the relative equation for arriving distance of the front of jet flow to the lapse of time are obtained. But free jet theory of Schlichting in the dimensionless concentra- tion is not in agreement with the present experimental results of the distance of the radial direction. It needs more study. When the arrival frequency of jet flow is used as a parameter, the transition area changing from unsteady flow area into steady flow area becomes gradually wider downstream, but its ratio for the whole unsteady flow area gradually decreases.
목차
ABSTRACT
1.서론
2.실험장치 및 방법
3.실험결과 및 고찰
4.결론
참고문헌
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