Pressure Distribution at Water Entry of a Symmetrical Wedge
Abstract
In current study, numerical and experimental investigations about water entry problem were conducted for a symmetrical wedge. The water entry problem for different geometries is one of the classical methods for determination of pressure distribution and loads around the hull of marine vehicles. These data can be used for optimum structural design of vessels particularly for high-speed crafts, which are very sensitive about the weight. In addition, the quantity of load can be considered in the equation of motion for analyzing the seakeeping performance of such vessels. In this research, the numerical analysis of free falling wedge with 30° deadrise with constant weight was done and for validation of results, it was followed by experimental tests. The outputs of this study consist of some graphs for comparison of trends for pressures respect to impact time, which can be used for signification of loads on hulls during the water entry phase.
##Keywords:##
Water Entry, Wedge, Pressure Distribution.
Published
Oct 20, 2014
How to Cite
NIKFARJAM, M. et al.
Pressure Distribution at Water Entry of a Symmetrical Wedge.
Journal of Ocean, Mechanical and Aerospace -science and engineering-, [S.l.], v. 12, n. 1, p. 11-20, oct. 2014.
ISSN 2527-6085.
Available at: <https://isomase.org/Journals/index.php/jomase/article/view/475>. Date accessed: 09 june 2026.
doi: http://dx.doi.org/10.36842/jomase.v12i1.475.
References
1. Von Karman, T., (1929). The impact on seaplane floats during landing, National Advisory Committee for Aeronautics: NACATN321. p. 2–8.
2. Wagner, H., (1932), Landing of sea planes, NACA Tech Memo.
3. Dobrovolskaya, Z.N., 1969. On some problems of similarity flow of fluid with a free surface, Journal of Fluid Mechanics 36(4).
4. Payne, P.R., 1988. Design of high-speed boats, vol. 1: Planing. Fishergate Inc.
5. Korobkin, A.A., Pokhnachov, V.V., 1988. Initial stage of water impact, Annual Review of Fluid Mechanics 20.
6. Zhao R, Faltinsen OM (1993). Water entry of two-dimensional bodies, J Fluid Mech 246:593–612.
7. Mei, X., Lui,Y., Yue, D.K.P., 1999. On the water impact of general two-dimensional sections, Applied Ocean Research 21.
8. Zamanirad S., Seif M. S., (2013). Hydroelastic analysis of water impact on wedge-shaped sections, Proceeding of NAVA 2013 Conference, p. 192-199.
9. Bisplinghoff, R.L. and Doherty, C.S., (1952). Some studies of the impact of vee wedges on a water surface, Journal of the Franklin Institute. Vol. 253(6): p. 547-561.
10. Chuang, S.L., 1970. ‘‘Investigation of Impact of Rigid and Elastic Bodies with Water,’’ Management Information Services.
11. Chuang, S.-L., 1967. Experiments on slamming of wedge-shaped bodies, Journal of Ship Research.
12. Ochi, M.D., Bonilla-Norat, J., 1970. Pressure-velocity relationship in impact of a ship model dropped onto the water surface and in slamming in waves, Naval Ship Research and Development Center Washington DC, US Department of Commerce, National Technical Information Service.
13. Chuang, S.-L., 1973. Slamming tests of three-dimensional models in calm water and waves. Naval Ship Research and Development Center Bethesda, MD, US Department of Commerce, National Technical Information Service.
14. Greenhow, M. and Lin, W.-M., Nonlinear free surface effects, Theory and experiment.
15. Lin, M.C. and Ho, T.Y., (1994), Water entry for a wedge in arbitrary water depth, Engineering Analysis with Boundary Elements. Vol. 14(2): p. 179-185.
16. Zhao, R., Faltinsen. O.M., and Aarsnes, J., ‘‘Water Entry of Arbitrary Two dimensional Sections with and without Flow Separation,’’ 21st Symposium on Naval Hydrodynamics. 1997, Trondheim, Norway: The National Academies Press.
17. Lin, M.-C., Shieh, L.-D., 1997. Simultaneous measurements of water impact on a two-dimensional body, Fluid Dynamics Research 19, 125–148.
18. Engle, A., Lewis, R., 2003. A comparison of hydrodynamic impacts prediction methods with two dimensional drop test data, Marine Structures 16, 175–182.
19. Faltinsen, O.M., Landrini, M., Greco, M., 2004. Slamming in marine applications, Journal of Engineering Mathematics 48, 187 –217.
20. Wu, G.X., Sun, H. and He, Y.S., (2004), Numerical simulation and experimental study of water entry of a wedge in free fall motion, Journal of Fluids and Structures. Vol. 19(3): p. 277-289.
21. Yettou, E.-M., Desrochers, A. and Champoux, Y., 2006. Experimental study on the water impact of a symmetrical wedge, Fluid Dynamics Research. Vol. 38(1): p. 47-66.
22. Sayeed, T.M., Peng, H. and Veitch, B., 2010. Experimental investigation of slamming loads on a wedge, The International Conference on Marine Technology: Dhaka, Bangladesh.
23. Javaherian, M.J., Zeraatgar, H. and Hassani Chalaksara. E., 2012. Experimental investigation of asymmetric entry of a wedge shaped body, International Conference on Violent Flows: Nantes, France.
2. Wagner, H., (1932), Landing of sea planes, NACA Tech Memo.
3. Dobrovolskaya, Z.N., 1969. On some problems of similarity flow of fluid with a free surface, Journal of Fluid Mechanics 36(4).
4. Payne, P.R., 1988. Design of high-speed boats, vol. 1: Planing. Fishergate Inc.
5. Korobkin, A.A., Pokhnachov, V.V., 1988. Initial stage of water impact, Annual Review of Fluid Mechanics 20.
6. Zhao R, Faltinsen OM (1993). Water entry of two-dimensional bodies, J Fluid Mech 246:593–612.
7. Mei, X., Lui,Y., Yue, D.K.P., 1999. On the water impact of general two-dimensional sections, Applied Ocean Research 21.
8. Zamanirad S., Seif M. S., (2013). Hydroelastic analysis of water impact on wedge-shaped sections, Proceeding of NAVA 2013 Conference, p. 192-199.
9. Bisplinghoff, R.L. and Doherty, C.S., (1952). Some studies of the impact of vee wedges on a water surface, Journal of the Franklin Institute. Vol. 253(6): p. 547-561.
10. Chuang, S.L., 1970. ‘‘Investigation of Impact of Rigid and Elastic Bodies with Water,’’ Management Information Services.
11. Chuang, S.-L., 1967. Experiments on slamming of wedge-shaped bodies, Journal of Ship Research.
12. Ochi, M.D., Bonilla-Norat, J., 1970. Pressure-velocity relationship in impact of a ship model dropped onto the water surface and in slamming in waves, Naval Ship Research and Development Center Washington DC, US Department of Commerce, National Technical Information Service.
13. Chuang, S.-L., 1973. Slamming tests of three-dimensional models in calm water and waves. Naval Ship Research and Development Center Bethesda, MD, US Department of Commerce, National Technical Information Service.
14. Greenhow, M. and Lin, W.-M., Nonlinear free surface effects, Theory and experiment.
15. Lin, M.C. and Ho, T.Y., (1994), Water entry for a wedge in arbitrary water depth, Engineering Analysis with Boundary Elements. Vol. 14(2): p. 179-185.
16. Zhao, R., Faltinsen. O.M., and Aarsnes, J., ‘‘Water Entry of Arbitrary Two dimensional Sections with and without Flow Separation,’’ 21st Symposium on Naval Hydrodynamics. 1997, Trondheim, Norway: The National Academies Press.
17. Lin, M.-C., Shieh, L.-D., 1997. Simultaneous measurements of water impact on a two-dimensional body, Fluid Dynamics Research 19, 125–148.
18. Engle, A., Lewis, R., 2003. A comparison of hydrodynamic impacts prediction methods with two dimensional drop test data, Marine Structures 16, 175–182.
19. Faltinsen, O.M., Landrini, M., Greco, M., 2004. Slamming in marine applications, Journal of Engineering Mathematics 48, 187 –217.
20. Wu, G.X., Sun, H. and He, Y.S., (2004), Numerical simulation and experimental study of water entry of a wedge in free fall motion, Journal of Fluids and Structures. Vol. 19(3): p. 277-289.
21. Yettou, E.-M., Desrochers, A. and Champoux, Y., 2006. Experimental study on the water impact of a symmetrical wedge, Fluid Dynamics Research. Vol. 38(1): p. 47-66.
22. Sayeed, T.M., Peng, H. and Veitch, B., 2010. Experimental investigation of slamming loads on a wedge, The International Conference on Marine Technology: Dhaka, Bangladesh.
23. Javaherian, M.J., Zeraatgar, H. and Hassani Chalaksara. E., 2012. Experimental investigation of asymmetric entry of a wedge shaped body, International Conference on Violent Flows: Nantes, France.
