지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.2
- 수록면
- 26 - 32 (7page)
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초록· 키워드
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The vortex flow behind a bluff body has been a subject of interest for a very long time because of its engineering applicability such as to vortex induced vibration. In the near wake of a bluff body, vortices are periodically shed in two shear layers, which originate in the trailing edges. The far wake is made up of the classical Karman vortices, which are connected together by streamwise and spanwise vortices. These vortex formations have been studied in many experimental and numerical ways. However, most of the studies considered non-cavitating flow. In this study, we investigated cavitating flow in the wake of a two-dimensional wedge. Experiments were conducted in a cavitation tunnel of Chungnam National University. Using a particle image velocimetry (PIV), we measured the velocity fields under two different flow conditions: non-cavitating and cavitating regimes. We also investigated the vortex shedding frequencies using an absolute pressure transducer mounted on the top of the test window. Throughout the experiments, it was found that the shedding frequency of the vortex was strongly affected by cavitation, and the Strouhal number could exceed its value in the non-cavitating regime.
목차
ABSTRACT
1. 서론
2. 실험장치 및 방법
3. 결과 및 분석
4. 결론
References
참고문헌 (7)
참고문헌 신청
Hyun, B.S., Choi, K.S., Doh, D.H., 2000. Quantitative Measurements of Complex Flow Field Around a Hydrofoil Using Particle Image Velocimetry. Journal of the Society Naval Architects of Korea, 37(3), 37-44.
Jang, Y.I., Lee S.J., 2008. PIV Analysis of Near-wake behind a Sphere at a Subcritical Reynolds Number. Experiments in Fluids, 44(6), 905-914.
Kim, J.H., Jeong, S.W., Ahn, B.K., Park, C.S., Kim, G.D., 2018. Numerical Analysis of Unsteady Cavitating Vortex around Twodimensional Wedge-shaped Submerged Body. Journal of Ocean Engineering and Technology, 32(1), 36-42. http://dx.doi.org/ 10.26748/KSOE.2018.2.32.1.036
Lee, J.Y., Paik, B.G., Lee, S.J., 2009. PIV Measurements of Hull Wake behind a Container Ship Model with Varying Loading Condition. Ocean Engineering, 36(5), 377-385.
Park, G.S., Kwak, Y.K., 2004. Flow Survey around Two-Dimensional Circular Cylinder using PIV Technique. Journal of Ocean Engineering and Technology, 18(3), 1-7.
Jang, Y.I., Lee S.J., 2008. PIV Analysis of Near-wake behind a Sphere at a Subcritical Reynolds Number. Experiments in Fluids, 44(6), 905-914.
Kim, J.H., Jeong, S.W., Ahn, B.K., Park, C.S., Kim, G.D., 2018. Numerical Analysis of Unsteady Cavitating Vortex around Twodimensional Wedge-shaped Submerged Body. Journal of Ocean Engineering and Technology, 32(1), 36-42. http://dx.doi.org/ 10.26748/KSOE.2018.2.32.1.036
Lee, J.Y., Paik, B.G., Lee, S.J., 2009. PIV Measurements of Hull Wake behind a Container Ship Model with Varying Loading Condition. Ocean Engineering, 36(5), 377-385.
Park, G.S., Kwak, Y.K., 2004. Flow Survey around Two-Dimensional Circular Cylinder using PIV Technique. Journal of Ocean Engineering and Technology, 18(3), 1-7.
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