Approximate transmission conditions through a weakly oscillating thin layer

Abstract : We study the behavior of the electro-quasistatic voltage potentials in a material composed by a bidimensional medium surrounded by a weakly oscillating thin layer and embedded in an ambient medium. We build approximate transmission conditions in order to replace the layer by these conditions on the boundary of the interior material. We deal with a weakly oscillating thin layer: the period of the oscillations is greater than the square root of the thinness. Our approach is essentially geometric and based on a suitable change of variable in the layer. This paper extends previous works of the former author, in which the layer had constant thickness.
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Mathematical Methods in the Applied Sciences, Wiley, 2009, 32 (4), pp.435-453. 〈10.1002/mma.1045〉
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Clair Poignard. Approximate transmission conditions through a weakly oscillating thin layer. Mathematical Methods in the Applied Sciences, Wiley, 2009, 32 (4), pp.435-453. 〈10.1002/mma.1045〉. 〈inria-00334772〉

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