On the free terms of the dual BEM for the two and three-dimensional Laplace problems
Journal
Journal of Marine Science and Technology
Journal Volume
8
Journal Issue
1
Pages
8-15
Date Issued
2000
Author(s)
Abstract
A dual integral formulation for the Laplace problem with a smooth boundary is derived by using the contour approach surrounding the singularity. It is found that using the contour approach the jump terms come half and half from the free terms in the L and M kernel integrations for the two-dimensional case, which is different from the limiting process by approaching an interior point to a boundary point where the jump terms come totally from the L kernel only. The definition of the Hadamard principal value for hypersingular integral at the collocation point of a smooth boundary is extended to a generalized sense for both the tangent and normal derivatives of double-layer potentials in comparison with the conventional definition. For the three-dimensional case, the jump terms come one-third and two-thirds from the free terms of L and M kernels, respectively.
Subjects
A smooth boundary; Dual boundary element method; Dual boundary integral equations; Free term; Laplace equation
Other Subjects
Boundary conditions; Integral equations; Problem solving; Three dimensional; Vectors; A smooth boundary; Dual boundary element methods; Dual boundary integral equations; Free terms; Laplace equations; Laplace transforms
Type
journal article