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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2013.5
- 수록면
- 327 - 335 (9page)
이용수
초록· 키워드
오류제보하기
Flow around a rotating circular cylinder in a uniform flow was numerically simulated using a finite volume method based on standard k-epsilon turbulent model in the static condition and LES model under a specified speed rotating and rotating oscillation conditions. This paper emphasize the research of the characteristics of vortex shedding and drag force reduction influenced by the oscillation motion of the circular cylinder. When a circular cylinder oscillates rotationally in a uniform stream, on the premise of specific vorticity(C<SUB>s</SUB> ) of the separation point around the cylinder, there will be various forms of vortex shedding patterns. That will be shown the differences with the patterns of flowing behind a stationary and constant speed of rotating cylinder. Every time as the max vorticity is greater than the specific vorticity value(?C<SUB>max</SUB>?≥ C<SUB>s</SUB> ) the cylinder will be changed to rotate reversely in the opposite direction. Also there are two forms of the variable motion of rotational cylinder with speed changed abruptly or gradually. Find the effective method of reducing drag by comparing the drag coefficient data.
목차
1. Introduction
2. Numerical simulation
3. Result and discussion
4. Conclusion
References
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UCI(KEPA) : I410-ECN-0101-2014-420-002915727