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SNUFOAM을 이용한 2차원 선박단면 형상의 입수 충격에 대한 연구

A STUDY ON WATER ENTRY OF TWO-DIMENSIONAL CROSS-SECTIONAL SHAPE USING SNUFOAM

  • 장동진 (서울대학교 조선해양공학과) ;
  • 최영민 (서울대학교 조선해양공학과) ;
  • 최학규 (서울대학교 조선해양공학과) ;
  • 이신형 (서울대학교 해양시스템공학연구소)
  • Jang, D.J. (Dept. of Naval Architecture & Ocean Engineering, Seoul National Univ.) ;
  • Choi, Y.M. (Dept. of Naval Architecture & Ocean Engineering, Seoul National Univ.) ;
  • Choi, H.K. (Dept. of Naval Architecture & Ocean Engineering, Seoul National Univ.) ;
  • Rhee, S.H. (Research Institute Of Marine Systems Engineering, Seoul National Univ.)
  • 투고 : 2016.06.10
  • 심사 : 2016.09.26
  • 발행 : 2016.09.30

초록

Nowadays, large container ships are continually developed and that's why the bow and stern structural stability problems by slamming become a significant more and more. However, due to the complexity of slamming, it is difficult to consider those problems at the design stage. For this reason, we attempt numerical analysis through SNUFOAM by generating the bow and stern two-dimensional cross-sectional grid in WILS JIP experiment at KRISO. Unlike the conventional method for the computation time saving, by setting the inlet flow conditions referred to the model test, we analyzed the slamming without applying the grid deformation method. As a result, when the stern model, as in the previous studies, it was possible to obtain quantitatively the fluid impulse is close to the experimental results. When the bow model, we can found the change by the position of force sensors which are derived for the bulbous bow and obtained fluid impulse and flow shape at slamming similar to the model test.

키워드

참고문헌

  1. 2014, KRISO, Hong, S.Y. and Kim, K.H., "Wave Induced Loads on Ships Joint Industry Project III Final Report," KRISO Technical Report No. BSPIS7230-10572-6.
  2. 2014, Southall, N.R., Lee, Y., Johnson, M.C., Hirdaris, S.E. and White, N.J., "Towards a Pragmatic Method for Prediction of Whipping: Wedge Impact Simulations using OpenFOAM," Structural Analysis and Hydrodynamics, Global Technology Centre, Lloyd's Register, UK.
  3. 2015, Southall, N.R., Choi, S., Lee, Y., Hong, C., Hirdaris, S.E. and White, N.J., "Impact Analysis using CFD A Comparative Study," Structural Analysis and Hydrodynamics, Global Technology Centre, Lloyd's Register, UK.
  4. 2013, Lee, H.H., "An Experimental Study on the Prediction of Stern Slamming Loads on Containerships," Seoul National University, Korea.
  5. 2008, Park, T.H., Choi, J.H., Lee, H.H. and Lee, Y.W., "Numerical investigations on the water entry of two-dimensional bodies," Hyundai Heavy Industries Co., Ltd.
  6. 2015, ISOPE, "Comparative Study on Water Impact Problem for Ship Section & Wedge Drops," International Ocean and Polar Engineering Conference.
  7. 2013, Kim, K.H., Hong, S.Y., Kim, Y.S., Kim, B.W. and Nam, B.W., "Experimental Investigation on the Measurement of Impact Force acting on Two-dimensional Wedge," Proceedings of the Eighth International Workshop on Ship Hydrodynamics, Seoul, Korea.