대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제56권3호
  • /
  • Pages.281-289
  • /
  • 2019
  • /
  • 1225-1143(pISSN)
  • /
  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
권호 표지
DOI QR코드

DOI QR Code

균일류에서 프로펠러 앞날 근처 관통구가 모형 프로펠러 캐비테이션에 미치는 영향

Influence of Thru Holes Near Leading Edge of a Model Propeller on Cavitation Behavior

  • 안종우 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박일룡 (동의대학교) ;
  • 박영하 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김제인 (동의대학교) ;
  • 설한신 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 김기섭 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • 투고 : 2018.07.12
  • 심사 : 2019.03.21
  • 발행 : 2019.06.20
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In order to investigate the influence of thru holes near leading edge of model propeller on cavitation behavior, a model propeller with thru holes was manufactured and tested at Large Cavitation Tunnel (LCT). The pressure distribution around the thru hole on propeller blade was numerically calculated to help understand the local flow characteristics related to cavitation behavior. The model propeller is a five bladed propeller which has 2 blades with thru holes and 3 blades with smooth surface. The cavitation observation tests were conducted at angles of $0^{\circ}$ & $6^{\circ}$ using an inclined-shaft dynamometer in LCT. There are big difference on the suction side cavitation behavior each other due to the existence of thru hole. While the blades with thou holes start generation of the sheet cavitation from the leading edge on the suction side, the blades with smooth surface generate the cloud cavitation from the mid-chord. Cavitation on the blades with thru holes shows more similar behavior to those of the full-scale propeller of which the pipe line for air injection is closed. The numerical analysis result shows that the sharp pressure drop occurs around thru holes on the blade. Consequently, the thru hole around leading edge stimulates the cavitation occurrence and stabilizes the cavitation behavior. Based on these results, the effect of thru holes on propeller cavitation behavior behind a model ship should be studied in the future.

키워드

참고문헌

  1. Ahn, J.W., Kim, K.S. & Park, Y.H., 2016. Experimental study of the POW characteristics using high-capacity inclined-shaft dynamometer in LCT. Proceedings of the Spring Conference, SNAK, pp.491-497.
  2. Kim, K.S., Kim, K.Y., Ahn, J.W., & Lee, J.T., 2000a, Effect of reynolds number, leading edge roughness and air content on the cavitation performance of model propellers. Journal of Society of Naval Architects of Korea, 37(1), pp.10-25.
  3. Kim, K.S., et al., 2000b. Cavitation-noise characteristics and controls on a 3D oscillating elliptic wing. Proceedings of the Spring Conference, SNAK, pp.161-166.
  4. Kim, K.S., Ahn, J.W., Park, Y.H., Kim, G.D., Kim, S.P., Yu, Y.W. & Lee, C.S., 2013, Correlation study on pressure fluctuation measurement at large cavitation tunnel with full-scale data for two container carriers. 12th PRADS, Changwon, Republic of Korea, 24-27 October 2013.
  5. Kim, K.S., et. al, 2017. Development of optimum design technology to increase cavitation inception speed of CPP for ship propulsion, KRISO Report.
  6. Kim, M.G., Ahn, H.T., Lee, J.T., & Lee, H.G., 2014. Fully unstructured mesh based computation of viscous flow around marine propellers. Journal of Society of Naval Architects of Korea, 51(2), pp.162-170. https://doi.org/10.3744/SNAK.2014.51.2.162
  7. Reisman, G.E., Duttweiler, M.E., & Brennen, C.E., 1997. Effect of air injection on the cloud cavitation of a hydrofoil. ASME Fluids Engineering Division Summer Meeting, Canada.
  8. Seol, H.S., Jung, B., Suh, J.C. & Lee, S., 2002, Prediction of non-cavitation underwater propeller noise. Journal of Sound and Vibration, 257(1), pp.131-156. https://doi.org/10.1006/jsvi.2002.5035
  9. Seol, H.S., Suh, J.C., & Lee, S., 2005. Development of hybrid method for the prediction of underwater propeller noise. Journal of Sound and Vibration, 288, pp.345-360. https://doi.org/10.1016/j.jsv.2005.01.015
  10. Shih, T.H., Liou, W.W., Shabbir, A., Yang, Z., & Zhu, J. 1995, A New k-e eddy viscosity model for high reynolds number turbulent flows. Computers Fluids, 24(3), pp. 227-238. https://doi.org/10.1016/0045-7930(94)00032-T
  11. Siemense, 2018. STAR-CCM+ 11.04 User Guide, [Online] Available at: https://support.industrysoftware.automation .siemens.com/general/documentation.shtml [Accessed 01 Jan. 2018].
  12. Wang, C., Huang, B., Zhang, M., Wang, G., Wu, Q., & Kong, D., 2018. Effects of air injection of the characteristics of unsteady sheet/cloud cavitation shedding in the convergent-divergent channel, International Journal of Multiphase Flow, 106, pp.1-20. https://doi.org/10.1016/j.ijmultiphaseflow.2018.04.020