Author(s)

V. Sladek & J. Sladek

Abstract

In this paper, we present the discussion of the shortcomings of modelling the boundary geometry by the Lagrange-type elements as well as by the standard Overhauser elements. The modified Overhauser elements are developed with removing the shortcomings associated with standard elements and preserving the C* continuity. Several illustrative examples are considered within a numerical experiment. 1 Introduction Recently a great progress has been achieved in the development of advanced BEM formulations especially with respect to regularized formulations facilitating an accurate numerical evaluation of singular and nearly singular integrals ' . In the regularization, there have been revealed strong requirements on continuity of the approximated boundary densities^ and b

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