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

  • 제48권4호
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  • Pages.317-324
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  • 2011
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  • 1225-1143(pISSN)
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  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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전산유체역학을 이용한 제한수로에서의 선박 침하 해석

Analysis of Ship Squat in Confined Water Using CFD

  • 신현경 (울산대학교 조선해양공학부) ;
  • 최시훈 (울산대학교 조선해양공학부)
  • Shin, Hyun-Kyoung (School of Naval architecture and Ocean Engineering, University of Ulsan) ;
  • Choi, Si-Hoon (School of Naval architecture and Ocean Engineering, University of Ulsan)
  • 투고 : 2011.03.13
  • 심사 : 2011.06.15
  • 발행 : 2011.08.20
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초록

When a ship proceeds in confined water, like canal, the water ahead of ship is pushed by hull. This pushed water returns to the side and under the hull, and this returned water will make fluid velocity higher at the side and under the hull, compared to the case in the infinite water depth. Due to the higher velocity, the pressure under the hull will decrease, resulting in the ship drop. This phenomenon is called "ship squat" and ship squat will result in various marine accidents. In this paper, for predicting ship squat, numerical calculation was carried out using commercial CFD code, FLUENT. To confirm wave pattern profile around the ship, VOF(Volume of Fluid) method was applied. The calculated results were compared with other paper's results and empirical methods.

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참고문헌

  1. Barrass, C.B. & Derrett, D.R., 2006. Ship Stability for Masters and Mates 6th edition, Butterworth-Heinemann.
  2. Choi, H.S., 1989. A Nonlinear Theroy for Wave Resistance and Squat of a Slender Ship Advancing Near the Critical Speed in Restricted Water, Journal of the SNAK, 26(4), pp.3-13.
  3. Choi, S.H. & Shin, H.K., 2010. Calculation of Resistance and Flow Field around KCS Using CFD, Proceeding of 2010 KAOST, Jeju, 3-4 June 2010, pp.2542-2544.
  4. Hewlett, C. Daggett, L. Stocks, D. & Vladimir, A., 2002. Dynamic Squat and Under-Keel Clearance of Ships in Confined Channels, 30th International Navigation Congress, S10B, pp.152-163.
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  7. Kim, T.Y. & Hyun, B.S., 2008. Analysis of Flow Field Including Bodies Steadily Moving Around the Free-surface by FLUENT-VOF Method, Journal of Navigation and Port Research, 32(1), pp.9-14. https://doi.org/10.5394/KINPR.2008.32.1.009
  8. Myong, H.K., 2002. Computational Heat Transfer and Fluid Flow, http://Munundang.co.kr
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피인용 문헌

  1. Experimental Study of Ship Squat for KCS in Shallow Water vol.51, pp.1, 2014, https://doi.org/10.3744/SNAK.2014.51.1.34
  2. Study of Ship Squat for KVLCC2 in Shallow Water vol.51, pp.6, 2014, https://doi.org/10.3744/SNAK.2014.51.6.539
  3. NUMERICAL ANALYSIS OF THE FLOW AROUND THE HULL AND THE PROPELLER OF A SHIP ADVANCING IN SHALLOW WATER vol.20, pp.4, 2015, https://doi.org/10.6112/kscfe.2015.20.4.093