정적 받음각을 갖는 초공동화 수중체에 대한 실험적 연구

이준희¹^{, *} ; 백부근¹ ; 김경열¹ ; 김민재² ; 김선홍² ; 이승재³

1한국해양과학기술원 부설 선박해양플랜트연구소
2국방과학연구소
3대우조선해양

Experimental Study on Supercavitated Body with Static Angle-of-attack

Jun-Hee Lee¹^{, *} ; Bu-Geun Paik¹ ; Kyoung-Youl Kim¹ ; Min-Jae Kim² ; Seonhong Kim² ; Seung-Jae Lee³

1Korea Research Institute of Ships & Ocean Engineering
2Agency for Defense Development
3Daewoo Shipbuilding & Marine Engineering

Correspondence to: ^*Jun-Hee Lee Tel: +82-42-866-3489 E-mail: ljh@kriso.re.kr

초록

본 연구에서는 디스크형 캐비테이터에 의해 생성된 초공동형태를 이용하여 수중체의 활주력을 측정하였다. 잠김 흘수비에 비례하여 활주력이 일반적으로 선형으로 증가하였고 활주각은 잠김 흘수비에 비례하지 않는 것으로 나타났다.

Abstract

In the present study, we investigated planing forces of supercavitated bodies by using the supercavitation shape produced by the disk type cavitator. It is found that the planing force increased in general linearly with the immersion draft ratio and the planing angle is certainly not proportional to the immersion draft ratio.

Keywords:

Supercavitated Body, Planing, Ventilated Supercavitation, Minimum Cavitation Number, Submergence Ratio, High-Speed Cavitation Tunnel

키워드:

초공동화 수중체, 활주현상, 환기 초공동, 최소공동수, 몸체 잠김 깊이 비, 고속캐비테이션 터널

Acknowledgments

본 연구는 미래창조과학부 및 방위사업청의 민군기술협력사업 UM14113RD1(PNS3100, 초공동캐비테이터 설계 및 성능 검증 연구)과제의 지원으로 수행되었으며 이에 감사드립니다.

References

Kawakami, E. and Arndt, R.E.A., “Investigation of the behavior of ventilated supercavities”, Journal of Fluids Engineering, 2011, 133 (9). 091305. [https://doi.org/10.1115/1.4004911]
Park, J., Kim, S. H. and Kim, N., “Studies on planing avoidance control for a ventilated supercavitating vehicle”, J. of the Society of Naval Architects of Korea, 53(3), 2016, 201-209. [https://doi.org/10.3744/SNAK.2016.53.3.201]
Kim, H. T., Kang, K. T., Choi, J. K., Jung, Y. R. and Kim, M. J., “A numerical study of effects of body shape on caivty and drag of underwater vehicle”, J. of the Society of Naval Architects of Korea, 55(3), 2018, pp. 252-264. [https://doi.org/10.3744/SNAK.2018.55.3.252]
Paik, B. G., Park, I. R., Kim, K. S., Lee, K. C., Kim, M. J. and Kim, K. Y., “Design of a bubble collecting section in a high speed water tunnel for ventilated supercavitation experiments”, J. Mechanical Science and Technology, 2017, 31(9), 4227-4235. [https://doi.org/10.1007/s12206-017-0821-x]
Paik, B. G., Kim, M. J., Jung Y. R., Lee, S. J., Kim, K. Y. and Ahn, J. W., “Fundamental Studies for Ventilated Supercavitation Experiments in New High-speed Cavitation Tunnel”, J. of the Society of Naval Architects of Korea, 2018, 55(4), pp. 330-340. [https://doi.org/10.3744/SNAK.2018.55.4.330]