, Volume 84, Issue 4, pp 679-695

On a hybrid boundary element method

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In this paper we study a symmetric boundary element method based on a hybrid discretization of the Steklov–Poincaré operator well suited for a symmetric coupling of finite and boundary elements. The representation used involves only single and double layer potentials and does not require the discretization of the hypersingular integral operator as in the symmetric formulation. The stability of the hybrid Galerkin discretization is based on a BBL–like stability condition for the trial spaces. Numerical examples confirm the theoretical results.

Received December 15, 1997 / Revised version received December 21, 1998/ Published online November 17, 1999