• Media type: Text; E-Book; Report
  • Title: Shape derivatives in Kondratiev spaces for conical diffraction
  • Contributor: Kleemann, Norbert [Author]
  • imprint: Weierstrass Institute for Applied Analysis and Stochastics publication server, 2010
  • Language: English
  • DOI: https://doi.org/10.20347/WIAS.PREPRINT.1489
  • Keywords: 35B20 ; 35B65 ; article ; 49Q10 ; 78A45 ; 35B45 ; System of Helmholtz equations -- transmission problem -- shape optimization -- corner singularities -- a priori estimate
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  • Description: This paper studies conical diffraction problems with non-smooth grating structures. We prove existence, uniqueness and regularity results for solutions in weighted Sobolev spaces of Kondratiev type. An a priori estimate, which follows from these results, is then used to prove shape differentiablility of solutions. Finally, a characterization of the shape derivative as a solution of a modified transmission problem is given.