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Debye and Debye-type potentials in diffraction, radiation and elastic wave propagation problems
Acoustical Physics, 2012Various representations of the vector potential $$\vec A$$ of displacement vector $$\vec u$$ in terms of the Debye and Debye-type potentials are considered for elastic ...
A A Kleshchev
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International Journal for Numerical Methods in Engineering, 1981
AbstractTwo of the most promising localized finite element methods are compared: the boundary series element method, in which a series of eigenfunctions is used to represent the far field solution; and the boundary integral element method, in which an integral equation is satisfied at the boundary between localized finite element and outer regions. The
Taylor, R. Eatock, Zietsman, J.
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AbstractTwo of the most promising localized finite element methods are compared: the boundary series element method, in which a series of eigenfunctions is used to represent the far field solution; and the boundary integral element method, in which an integral equation is satisfied at the boundary between localized finite element and outer regions. The
Taylor, R. Eatock, Zietsman, J.
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Marine Structures, 1995
The finite element method for solving the linear floating body hydrodynamic problem is considered with a hierarchy of boundary damper options for modelling the far field. The computer program is validated using two simple examples for which added mass and damping coefficients are computed over a wide range of frequencies.
P Krishnankutty
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The finite element method for solving the linear floating body hydrodynamic problem is considered with a hierarchy of boundary damper options for modelling the far field. The computer program is validated using two simple examples for which added mass and damping coefficients are computed over a wide range of frequencies.
P Krishnankutty
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A time-domain second-order FEM model for the wave diffraction-radiation problem. Validation with a semisubmersible platform [PDF]
Marine Structures, 2018 Abstract A finite element method for the solution of the up-to-second-order wave diffraction-radiation problem in the time-domain is proposed. The solver has been verified against available analytical solutions, and validated using experimental data available for the HiPRWind semisubmersible platform (designed for floating wind turbines). To validate,
J García-Espinosa, Borja Servan-Camas
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Note on a general relation between diffraction and radiation problems in acoustics
The Journal of the Acoustical Society of America, 1977A general relation between the farfield amplitudes of the diffraction and the radiation problems by a rigid body is deduced.
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Weak radiation condition in the problem of a plane wave diffraction by a wedge
MMET '96. VIth International Conference on Mathematical Methods in Electromagnetic Theory. Proceedings, 2002The Kontorovich-Lebedev transform is used for the solution of various problems of diffraction by a wedge. A failure of this transform is that it is applicable to a narrow class of functions not containing, in particular, a complete solution to the problem of diffraction.
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A direct boundary-element method for three-D wave diffraction and radiation problems
Ocean Engineering, 1988Abstract Three-dimensional analytical procedures are developed for determining the wave-exciting and motion-induced hydrodynamic forces for fixed and floating ocean structures in a fluid of finite or infinite depth. The fluid potential is expressed by means of a Helmholtz integral, which involves the normal fluid velocities at the fluid-structure ...
Chih-Kang Lee, Jack Y.K. Lou
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Pre-wave zone effect in transition and diffraction radiation: Problems and solutions
Physics Letters A, 2005Transition radiation (TR) and diffraction radiation (DR) appearing as a result of dynamic polarization of medium has widely been used for electron beam diagnostics during the last few years. A lot of techniques for electron beam diagnostics imply description of these phenomena assuming that the radiated area of the target is negligibly small in ...
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Radioengineering
As a rule, problems of radiation and diffraction on bodies of revolution of large electrical size are solved by the method of integral equations, since in this case the original boundary value problem can be reduced to a system of two Fredholm integral equations.
V.V. Akhiyarov +2 more
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As a rule, problems of radiation and diffraction on bodies of revolution of large electrical size are solved by the method of integral equations, since in this case the original boundary value problem can be reduced to a system of two Fredholm integral equations.
V.V. Akhiyarov +2 more
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