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A numerical refraction-diffraction model in the ray-front coordinate system
(Computational mechanics: new trends and applications (CD-ROM), 1998)
[Resument] A model for the propagation of water waves is presented, which retrieves the
concepts of rays and fronts from the geometrical optics approximation. Their definition here
is nevertheless different in that it ...
A boundary element numerical approach for substation grounding in a two layer earth structure
(Tech Science Press, 1997)
[Abstract] Analysis and design of substation grounding requires computing the distribution of potential
on the earth surface (for reasons of human security) and the equivalent resistance of the earthing
system (for reasons ...
Analytical integration techniques for earthing grid computation by boundary element methods
(Centro Internacional de Métodos Numéricos en Ingeniería, CIMNE (Barcelona), 1992)
[Abstract] Analysis and design of substation earthing involves computing the equivalent resistance of grounding systems, but also distribution of potentials on the earth surface due to fault currents [1]. While very crude ...
A validation of the boundary element method for grounding grid design and computation
(Centro Internacional de Métodos Numéricos en Ingeniería, CIMNE (Barcelona), 1992)
[Abstract] Several widespread intuitive techniques developed during the last two decades for substation grounding analysis, such as the Average Potential Method
(APM), have been recently identified as particular cases of ...
A BEM formulation for computational design of grounding systems in stratified soils
(Centro Internacional de Métodos Numéricos en Ingeniería, 1998)
[Abstract] Substation grounding design involves computing the equivalent resistance of the earthing system -for reasons of equipment protection-, as well as distribution of
potentials on the earth surface -for reasons of ...
High order shape design sensitivity: an unified approach
(Centro Internacional de Métodos Numéricos en Ingeniería, 1998)
[Abstract] Three basic analytical approaches have been proposed for the calculation
of sensitivity derivatives in shape optimization problems. The first approach is based
on differentiation of the discretized equations. ...