Author(s)

Diego Caratelli, Johan Gielis, Ilia Tavkhelidze, Paolo Emilio Ricci

Department of Bioscience Engineering, University of Antwerp, Antwerp, Belgium.
Faculty of Engineering, Campus Bio-Medico University, Rome, Italy.
Faculty of Exact and Natural Sciences, Tbilisi State University, Tbilisi, Georgia.
Microwave Sensing, Signals and Systems, Delft University of Technology, Delft, The Netherlands.

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.

Robin Problem; Helmholtz Equation; Spherical Harmonic Expansion; Gielis Formula; Supershaped Shell

D. Caratelli, J. Gielis, I. Tavkhelidze and P. Ricci, "Spherical Harmonic Solution of the Robin Problem for the Helmholtz Equation in a Supershaped Shell," Applied Mathematics, Vol. 4 No. 1A, 2013, pp. 263-270. doi: 10.4236/am.2013.41A040.