Spherical harmonic solution of the Robin problem for the Helmholtz equation in a supershaped shell
Faculty of Sciences. Bioscience Engineering
Irvine, CA :Scientific Research Publishing, Inc
Engineering sciences. Technology
Applied mathematics. - Irvine, CA, 2009, currens
, p. 263-270
University of Antwerp
The Robin problem for the Helmholtz equation in normal-polar shells is addressed by using a suitable spherical harmonic expansion technique. Attention is in particular focused on the wide class of domains whose boundaries are defined by a generalized version of the so-called superformula introduced by Gielis. A dedicated numerical procedure based on the computer algebra system Mathematica? is developed in order to validate the proposed methodology. In this way, highly accurate approximations of the solution, featuring properties similar to the classical ones, are obtained.