1. A Seakeeping Computation Method Considering Fully Nonlinear Steady Wave Field by Mirel Nechita

4. STEADY FLOW Boundary conditions for iterative scheme: Steady wave elevation and steady pressure (4) (5) (3)

5. UNSTEADY FLOW Boundary conditions (6) (7) Where (8)

6. Hydrodynamic forces Unsteady waves (9) (10) (12) Ship motions (11)

8. Ship hull form of Series-60 (Cb=0.8) N H =1320

9. Computational grids of Series-60, Cb=0.8 (N H =1320, N F =1717)

10. Steady wave distribution for Series-60 (Cb=0.8) along several longitudinal axes at Fn=0.2

11. Contour plots of the steady wave for Series-60 (Cb=0.8)

12. Hull discretization for Series-60, Cb=0.8 - unsteady problem

13. Added mass and damping coefficients for heave and pitch for Series-60 (Cb=0.8) at Fn=0.2

14. Wave exciting forces and moment for Series-60 (Cb=0.8) at Fn=0.2,  =180 degs.

15. Ship motions for Series-60 (Cb=0.8) at Fn=0.2,  =180 degs.

16. Contour plots of heave radiation wave for Series-60 (Cb=0.8) at Fn=0.2, KL=24.0 and t=0

17. Contour plots of diffraction wave for Series-60 (Cb=0.8) at Fn=0.2,  /L=0.5,  =180 degs. and t=0

18. Ship hull form of Series-60 (Cb=0.6) N H =1320

19. Steady wave cuts for Series-60 at Fn=0.2 (Cb=0.6 left, Cb=0.8 right)

20. Steady wave contour plots for Series-60, slender model (Cb=0.6) at Fn=0.2

21. Wave exciting forces and moment for Series-60 at Fn=0.2,  =180 degs.

23. HYBRID METHOD NEAR FIELD - Desingularized Rankine Panel Method FAR FIELD - Green Function Method

24. Unsteady potentials for the far field Free surface boundary condition for the far field Artificial surface boundary condition (13) (15) (14)

25. Side wall effect on the unsteady wave Fn=0.2 , KL=2.0 (  =0.283) Fn=0.2 , KL=1.3 (  =0.23)

26. Computational grids of Series-60 utilized in Hybrid Method

27. Coupled added mass and damping coefficients for heave and pitch for Series-60 (Cb=0.6) at Fn=0.2

28. Wave exciting forces and moment for Series-60 (Cb=0.6) at Fn=0.2,  =180 degs.

29. Added mass and damping coefficients for heave and pitch for Series-60 (Cb=0.8) at Fn=0.2

30. Contour plot of heave radiation wave for Series-60 (Cb=0.8) at Fn=0.2, KL=1.32,  =0.23

31. Perspective view of heave radiation wave for Series-60 (Cb=0.8) at Fn=0.2, KL=1.32,  =0.23

33. Hull discretization for the fast ship N H =1007

34. Steady wave distributions along ship-side at Fn=0.6 Improved hull form Initial hull form

35. Steady wave contour plots, Fn=0.6

36. Initial hull form Improved hull form Steady pressure distributions on hull, Fn=0.6

37. Diffraction wave -  7 /A at Fn=0.6,  /L=0.5,  =180º and t=0