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Journal of Ship Research 53 (03): 137–150.
Paper Number: SNAME-JSR-2009-53-3-137
Published: 01 September 2009
... expression integration Journal of Ship Research, Vol. 53, No. 3, September 2009, pp. 137 150 Practical Evaluation of Steady Flow Resulting from a Free-Surface Pressure Patch Francis Noblesse,* Ge´rard Delhommeau, and Chi Yang *David Taylor Model Basin, NSWCCD, West Bethesda, Maryland Laboratoire de Me...
Journal of Ship Research 53 (01): 31–47.
Paper Number: SNAME-JSR-2009-53-1-31
Published: 01 March 2009
... related to the time integration can be avoided without relying on infinite frequency added mass, which is inevitable when an explicit scheme is used. Moreover, a direct integration scheme, such as the Newmark-β method, for structural problems can be used, and this formulation can be easily extended to the...
Journal of Ship Research 51 (02): 104–127.
Paper Number: SNAME-JSR-2007-51-2-104
Published: 01 June 2007
... method uses geometric bounds on interface position as a means of mitigating diffusion, but it does so without reconstructing the interface. This makes it relatively simple. A new time integration technique is also presented. It uses subcycles based on a time step limiter to facilitate rigorous mass...
Journal of Ship Research 50 (02): 120–137.
Paper Number: SNAME-JSR-2006-50-2-120
Published: 01 June 2006
... 2006 2006. The Society of Naval Architects and Marine Engineers wave resistance singularity subcritical speed slender body theory shallow water integrand cosh 2 integration path water depth steepest descent integration path supercritical speed residue contribution Artificial...
Journal of Ship Research 50 (01): 38–48.
Paper Number: SNAME-JSR-2006-50-1-38
Published: 01 March 2006
... research sin 3 hovercraft logic & formal reasoning marine transportation mathematical model drift angle march 2006 derivative numerical computation excess pressure integration Journal of Ship Research, Vol. 50, No. 1, March 2006, pp. 38-48 Forces Exerted on a Hovercraft by a Moving...
Journal of Ship Research 48 (04): 305–310.
Paper Number: SNAME-JSR-2004-48-4-305
Published: 01 December 2004
... force can be considered as an "integral" over a delta function of Dirac situated at the nose of the profile. An application of the method is given to show that in the linear theory a nonslotted periodically moving profile that does not shed free vorticity cannot yield a nonzero mean thrust. 1 12...
Journal of Ship Research 47 (04): 347–364.
Paper Number: SNAME-JSR-2003-47-4-347
Published: 01 December 2003
... derivatives and their integrations over panels or segments, are briefly presented and have been introduced into the seakeeping codes Aquaplus developed at Ecole Centrale de Nantes and Poseidon at Laboratoire d'Etudes Aerodynamiques (LEA), Centre d'Etudes Aerodynamiques et Thermiques (CEAT). Both codes...
Journal of Ship Research 47 (04): 290–298.
Paper Number: SNAME-JSR-2003-47-4-290
Published: 01 December 2003
... singular and nonsingular parts; then the former is integrated analytically, whereas the latter is integrated using Gaussian quadrature. Through a desingularization process, the accuracy of the present method can be increased without limit to any order by selecting a proper numerical quadrature. A null...
Journal of Ship Research 46 (01): 31–38.
Paper Number: SNAME-JSR-2002-46-1-31
Published: 01 March 2002
... calculation hull wave drag integration tank test appendage doublet equation Journal of Ship Research, Vol. 46, No. 1, March 2002, pp. 31 38 Free-Surface Effects of Yacht Appendages P. S. Jackson* and G. Marr! *Department of Mechanical Engineering, University of Auckland, New Zealand !Afnity...
Journal of Ship Research 45 (03): 165–176.
Paper Number: SNAME-JSR-2001-45-3-165
Published: 01 September 2001
...Noriaki Okita; Iskender Sahin; Mark C. Hyman A two-dimensional study of flow due to a moving pressure distribution in subcritical Froude numbers over finite-depth water was conducted by a linearized ideal flow approach. A numerical integration algorithm was developed to evaluate the analytical...
Journal of Ship Research 45 (01): 73–84.
Paper Number: SNAME-JSR-2001-45-1-73
Published: 01 March 2001
... wave height convergence application integration wave height hull form Journal of Ship Research, Vol. 45, No. 1, March 2001, pp. 73 84 Rapid Estimation of Near- and Far-Field Wave Wake from Ships and Application to Hull Form Design and Optimization Alexander H. Day* and Lawrence J. Doctors...
Journal of Ship Research 43 (03): 170–179.
Paper Number: SNAME-JSR-1999-43-3-170
Published: 01 September 1999
... results for idealized ship hullforms. BAAR wave resistance ship research Wigley hull evaluation jk series equation calculation wave drag september 1999 Beck accuracy convergence neumann-kelvin problem integration Computation expression agreement 1 9 1999 1 9 1999...
Journal of Ship Research 41 (03): 161–171.
Paper Number: SNAME-JSR-1997-41-3-161
Published: 01 September 1997
... surface. The cavity detachment and reattachment points are measured for several values of the cavitation number. The forces are evaluated from the measured velocities via momentum flux integrations. The measurements are compared with the numerical results from a nonlinear, inviscid cavity flow analysis...
Journal of Ship Research 40 (03): 200–210.
Paper Number: SNAME-JSR-1996-40-3-200
Published: 01 September 1996
... 1996 lift force time step convergence komatsu integration Artificial Intelligence wetted length boundary condition free-water surface coefficient wetted-length change equation Journal of Ship Research, Vol. 40, No. 3, Sept. 1995, pp. 200-210 Two-Dimensional Unsteady Planing Tore U ls te...
Journal of Ship Research 40 (02): 89–106.
Paper Number: SNAME-JSR-1996-40-2-89
Published: 01 June 1996
... geometrically and hydrodynamically. The reduction of the exact formulation to an axis satisfaction of the boundary conditions allows much of the geometric inversion imbedded within the initial value problem to be performed analytically. Thus the outer numerical time integration of the system is in terms of...
Journal of Ship Research 37 (04): 281–297.
Paper Number: SNAME-JSR-1993-37-4-281
Published: 01 December 1993
...Zhi Guo; Allen T. Chwang Hydrodynamic interactions between a three-dimensional body of revolution and an infinitely long circular cylinder in an inviscid fluid are studied numerically by the boundary-integral method. The added-mass coefficients and their derivatives are computed in terms of the...
Journal of Ship Research 36 (04): 287–298.
Paper Number: SNAME-JSR-1992-36-4-287
Published: 01 December 1992
... pressure with shear must satisfy a modified-Helmholtz equation having a parametric function of the reciprocal of the given axial wake velocity. A solution is found in terms of integrals for a class of shear flows whose parameters can be calculated from the given wake. The theory is found to be inapplicable...
Journal of Ship Research 36 (01): 17–29.
Paper Number: SNAME-JSR-1992-36-1-17
Published: 01 March 1992
... equation. This approach circumvents the fundamental difficulties associated with the numerical evaluation of the Green function and its gradient, and their subsequent integration over the panels used to approximate the hull surface of a ship. 1 3 1992 1 3 1992 1992. The Society of Naval...
Journal of Ship Research 36 (01): 38–54.
Paper Number: SNAME-JSR-1992-36-1-38
Published: 01 March 1992
... boundary-integral method and the generalized Taylor added-mass formula. The integral equations, in terms of surface-source distributions on both surfaces, are modified for obtaining accurate numerical solutions. Numerical results are given for several practical engineering problems. 1 3 1992 1 3...
Journal of Ship Research 36 (01): 88–90.
Paper Number: SNAME-JSR-1992-36-1-88
Published: 01 March 1992
... treatment is proposed (and used);this approach may be of help in studies where the methods of elliptic functions theory have to be used. 1 3 1992 1 3 1992 1992. The Society of Naval Architects and Marine Engineers formula ship research absolute value integration proximity elliptic...
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