한국가시화정보학회:학술대회논문집
- 한국가시화정보학회 2007년도 추계학술대회
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- Pages.143-148
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- 2007
A Study on the Flow Characteristics with the Width of Annular Slit in Spiral Flow Nozzle
- Kim, T.H. (Dept. of Mech. Eng., Pukyong Nat'l Univ.) ;
- Setoguchi, T. (Dept. of Mech. Eng., Saga Univ.) ;
- Lee, Y.W. (Dept. of Mech. Eng., Pukyong Nat'l Univ.)
- 발행 : 2007.11.30
초록
In comparison with previous researches for swirling flow, the spiral flow self-generated in the spiral flow nozzle has some different characteristics. It is not needed a compulsive tangential momentum to get its velocity component and has long potential core, relatively low swirl ratio, and high focusing ability. In this study, the self-generated mechanism of the spiral flow was clarified and the effect on the width of annular slit on spiral flow characteristics was investigated experimentally and numerically. As a result, the existence of tangential velocity component regardless of a compulsive angular momentum is clarified and the results obtained by experiment have a satisfactory agreement with those by numerical method, quantitatively and qualitatively.