کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1726012 1520730 2013 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A BEM-isogeometric method for the ship wave-resistance problem
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
پیش نمایش صفحه اول مقاله
A BEM-isogeometric method for the ship wave-resistance problem
چکیده انگلیسی

In the present work isogeometric analysis is applied to the solution of the boundary integral equation associated with the Neumann–Kelvin problem and the calculation of the wave resistance of ships. As opposed to low-order panel methods, where the body is represented by a large number of quadrilateral panels and the velocity potential is assumed to be piecewise constant (or approximated by low degree polynomials) on each panel, the isogeometric concept is based on exploiting the same NURBS basis, used for representing exactly the body geometry, for approximating the singularity distribution (and, in general, the dependent physical quantities). In order to examine the accuracy of the present method, numerical results obtained in the case of submerged and surface piercing bodies are compared against analytical solutions, experimental data and predictions provided by the low-order panel or other similar methods appeared in the pertinent literature, illustrating the superior efficiency of the isogeometric approach. The present approach by applying isogeometric analysis and boundary element method to the linear NK problem has the novelty of combining modern CAD systems for ship-hull design with computational hydrodynamics tools.


► Isogeometric analysis of boundary integral equations.
► Neumann–Kelvin formulation for ship wave resistance problem.
► High-order boundary element method.
► NURBS representation of the body geometry and the unknown field quantities.
► Integration of ship-hull CAD systems with CFD tools.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 60, 1 March 2013, Pages 53–67
نویسندگان
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