NDLI: Hydrodynamic Analysis and Motions of Ship with Forward Speed via a Three-Dimensional Time-Domain Panel Method

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Hydrodynamic Analysis and Motions of Ship with Forward Speed via a Three-Dimensional Time-Domain Panel Method

Content Provider	MDPI
Author	Zhang, Peng Zhang, Teng Wang, Xin
Copyright Year	2021
Description	A new three-dimensional (3D) time-domain panel method is developed to solve the ship hydrodynamic problem and motions. For an advancing ship with a constant forward speed in regular waves, the ship’s hull can be discretized and processed into a number of quadrilateral panels. Based on Green’s theorem, an analytical expression for Froude–Krylov (F-K) forces evaluation on the quadrilateral panels is derived without accuracy loss. Within the linear potential theory, the transient free surface Green function (TFSGF) is applied to solve the boundary value problem. To improve the efficiency and numerical stability of TFSGF evaluation, a precise integration method with variable parameters setting for extended identity matrix is developed to compute the TFSGF in the computation domain. Then, radiation and diffraction forces can be evaluated by means of the impulse response function method. The Wigley Ⅰ hull form is taken as a study case, and the computed hydrodynamic coefficients, wave exciting forces, and motions by the present method are compared with previous literature experimental data and prior published results. It manifests that the three-dimensional time-domain panel method proposed in this paper has good accuracy.
Starting Page	87
e-ISSN	20771312
DOI	10.3390/jmse9010087
Journal	Journal of Marine Science and Engineering
Issue Number	1
Volume Number	9
Language	English
Publisher	MDPI
Publisher Date	2021-01-15
Access Restriction	Open
Subject Keyword	Journal of Marine Science and Engineering Marine Engineering Time-domain Panel Method Hydrodynamic Problem Froude–krylov Forces Transient Free Surface Green Function Precise Integration Method
Content Type	Text
Resource Type	Article

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