Download or read book Acoustic Scattering from Ellipses by the Modal Element Method written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-10 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The modal element method is used to study acoustic scattering from ellipses, which may be acoustically soft (absorbing) or hard (reflecting). Because exact solutions are available, the results provide a benchmark for algorithm performance for scattering from airfoils and similar shapes. Numerical results for scattering from rigid ellipses are presented for a wide variety of eccentricities at moderate frequencies. These results indicate that the method is practical. Kreider, Kevin L. and Baumeister, Kenneth J. Glenn Research Center NASA-TM-106935, E-9663, NAS 1.15:106935 RTOP 505-62-52...