Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental Study of Water Impact Loads on Symmetric and Asymmetric Wedges

대칭 및 비대칭 2차원 쐐기의 입수 충격에 관한 실험적 연구

  • 김경환 (선박해양플랜트연구소 해양플랜트연구부) ;
  • 이동엽 (선박해양플랜트연구소 해양플랜트연구부) ;
  • 홍사영 (선박해양플랜트연구소 해양플랜트연구부) ;
  • 김영식 (선박해양플랜트연구소 해양플랜트연구부) ;
  • 김병완 (선박해양플랜트연구소 해양플랜트연구부)
  • Received : 2014.03.10
  • Accepted : 2014.05.22
  • Published : 2014.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

In the present study, the water impact loads on two-dimensional symmetric and asymmetric wedges were mainly studied. The impact pressure and force were measured during a vertical drop of the symmetric and asymmetric wedges. The measured pressure was compared with analytic solutions. The measured force at a local area of the wedge was compared with the integrated pressures and analytic solutions. Some findings on symmetric and asymmetrical wedge drops are presented, and the reliability of the force sensor used for the measurement of the local impact force is discussed.

Keywords

References

  1. Alaoui, A.E.M., Neme, A., Tassin, A., Jacques, N., 2012. Experimental Study of Coefficients during Vertical Water Entry of Axisymmetric Rigid Shapes at Constant Speeds. Applied Ocean Research, 37, 183-197. https://doi.org/10.1016/j.apor.2012.05.007
  2. Dobrovol'skaya, Z.N., 1969. On Some Problems of Similarity Flow of Fluid with a Free Surface. Journal of Fluid Mechanics, 36, 805-829. https://doi.org/10.1017/S0022112069001996
  3. Fairlie-Clarke, A.C., Tveitnes, T., 20008. Momentum and Gravity Effects during the Constant Velocity Water Entry of Wedge-Shaped Sections. Ocean Engineering, 35, 706-716. https://doi.org/10.1016/j.oceaneng.2006.11.011
  4. Judge, C., Troesch, A., Perlin, M., 2004. Initial Water Impact of a Wedge at Vertical and Oblique Angles. Journal of Engineering Mathematics, 48, 279-303. https://doi.org/10.1023/B:engi.0000018187.33001.e1
  5. Mei, X., Liu, Y., Yue, D.K.P., 1999. On the Water Impact of General Two-dimensional Sections. Applied Ocean Research, 21, 1-15. https://doi.org/10.1016/S0141-1187(98)00034-0
  6. Peseux, B., Gornet, L., Donguy, B., 2005. Hydrodynamic Impact: Numerical and Experimental Investigations. Journal of Fluid and Structures, 21, 277-303. https://doi.org/10.1016/j.jfluidstructs.2005.04.011
  7. Semenov, Y.A., Iafrati, A., 2006. On the Nonlinear Water Entry Problem of Asymmetric Wedges. Journal of Fluid Mechanics, 547, 231-256. https://doi.org/10.1017/S0022112005007329
  8. Tveitnes, T., Fairlie-Clarke, A.C., Varyani, K., 2008. An Experimental Investigation into the Constant Velocity Water Entry of Wedge-shaped Sections. Ocean Engineering, 35, 1463-1478. https://doi.org/10.1016/j.oceaneng.2008.06.012
  9. Von Karman, T., 1929. The Impact on Seaplance during Landing. NACA Technical Note No. 321.
  10. Wagner, H., 1932. Uber Stoss und Gleitvorgange an der Oberflache von Flussigkeiten. Zeitschrift fur Angewandte Mathematik und Mechanik, 12(4), 193-235. https://doi.org/10.1002/zamm.19320120402
  11. Yettou, E.M., Desrochers, A., Champoux, Y., 2006. Experimental Study on the Water Impact of a Symmetrical Wedge. Fluid Dynamic Research, 38, 47-66. https://doi.org/10.1016/j.fluiddyn.2005.09.003
  12. Xu, G.D., Duan, W.Y., Wu, G.X., 2008. Numerical Simulation of Oblique Water Entry of an Asymmetrical Wedge. Ocean Engineering, 35, 1597-1603. https://doi.org/10.1016/j.oceaneng.2008.08.002
  13. Zhao, R., Faltinsen, O.M., 1993. Water Entry of Twodimensional Bodies. Journal of Fluid Mechanics, 246, 593-612. https://doi.org/10.1017/S002211209300028X
  14. Zhao, R., Faltinsen, O.M., Aarsnes, J., 1997. Water Entry of Arbitrary Two-Dimensional Sections with and Without Flow Separation. 21st Symposium on Naval Hydrodynamics, Washington DC, USA.