Water entry of a wedge into waves in there degrees of freedom

• Autorzy: Sun S.Y. , Chen H.L. , Xu G.
• Języki publikacji: EN

Abstrakty

EN

The hydrodynamic problem of a two-dimensional wedge entering into a nonlinear wave in three degrees of freedom is investigated based on the incompressible velocity potential theory. The problem is solved through the boundary element method in the time domain. To avoid numerical difficulties due to an extremely small contact area at the initial stage, a stretched coordinate system is used based on the ratio of the Cartesian system in the physical space to the distance travelled by the wedge in the vertical direction. The mutual dependence of body motion and wave loading is decoupled by using the auxiliary function method. Detailed results about body accelerations, velocities and displacements at different Froude numbers or different waves are provided, and the mutual effect between body motion and wave loading is analysed in depth

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2019
• Tom: 26
• Numer: 1
• Opis fizyczny: p.117-124,fig.,ref.

Twórcy

autor

Sun S.Y.

• Jiangsu University of Science and Technology, Mengxi Road, 212003 Zhenjiang, China

autor

Chen H.L.

• Harbin Engineering University, Nantong Street, 150001 Harbin, China

autor

Xu G.

• Jiangsu University of Science and Technology, Mengxi Road, 212003 Zhenjiang, China

Bibliografia

• 1.S.D. How ison, J.R . Ockendon, S.K, Wi lson, Incompressible water-entry problems at small deadrise angles, J. Fluid Mech., 222, 215–230, 1991
• 2. O.M. Faltinsen, Water entry of a wedge with Finite deadrise angle, J. Ship Res., 46(13), 39-51, 2002.
• 3. A. Korobkin, R. Guéret, Š. Malenica, Hydroelastic coupling of beam finite element model with Wagner theory of water impact, J. Fluids Struct., 22(4), 493-504, 2006.
• 4. Z .N. Dobrovolskaya, On some problems of simi la rit y flow of fluid with a free surface, J. Fluid Mech., 36(4), 805–829, 1969.
• 5. R. Zhao, O. Faltinsen, Water entry of two-dimensional bodies, J. Fluid Mech., 246, 593–612, 1993.
• 6. Y.A. Semenov, A. Iafrati, On the nonlinear water entry problem of asymmetric wedges, J. Fluid Mech., 547, 231–256, 2006.
• 7. G.D. Xu, W.Y. Duan, G.X. Wu, Numerical simulation of oblique water entry of asymmetrical wedge, Ocean Eng., 35(16), 1597-1603, 2008.
• 8. G.X. Wu, Numerical simulation of water entry of twin wedges, J. Fluids Struct., 22, 99-108, 2006.
• 9. G.X. Wu, H. Sun, Y.S. He, Numerical simulation and experimental study of water entry of a wedge in free fall motion, J. Fluids Struct., 19(3), 277-289, 2004.
• 10. G.D. Xu, W.Y. Duan, G.X. Wu, Simulation of water entry of a wedge through free fall in three degrees of freedom, Math. Phys. & Eng. Science, 466, 2219-2239, 2010.
• 11. O.M. Faltinsen, Sea loads on ships and offshore structures, Cambridge University Press, 1990.
• 12. S.Y. Sun, S.L. Sun, G.X Wu, Oblique water entry of a wedge into waves w it h g rav it y effect, J. Fluids St r uct., 52(1), 49- 6 4, 2015.
• 13. C.H. Lu, Y.S. He, G.X. Wu, Coupled analysis of nonlinear interaction between fluid and structure during impact, J. Fluids Struct., 14(1), 127-146, 2000.
• 14. G.X. Wu, R. Eatock Taylor, Transient motion of a floating body in steep waves, 11th Workshop on Water Waves and Floating Bodies, Hamburg, Germany, 1996.
• 15. G.X. Wu, R. Eatock Taylor, The coupled finite element and boundary element analysis of nonlinear interactions between waves and bodies, Ocean Eng., 30(3), 387-400, 2003.
• 16. G.X. Wu, Hydrodynamic force on a rigid body during impact with liquid, J. Fluids Struct., 12(5), 549–559, 1998.
• 17. J.D. Fenton, A fifth-order Stokes theory for steady waves, J. Waterway Port Coastal and Ocean Eng., 111, 216-234, 1985.

Identyfikatory

DOI

10.2478/pomr-2019-0013