Fast direct high-order methods for electromagnetic scattering from bodies of revolution

Seminar: 
Applied Mathematics/Analysis Seminar
Event time: 
Monday, February 5, 2018 - 4:00pm to 5:00pm
Speaker: 
Mike O’Neil
Speaker affiliation: 
NYU
Event description: 

Full three-dimensional high-order codes for electromagnetic scattering from complex geometries are currently out of reach in mostcases. However, in particular (non-trivial) geometries very efficient algorithms can be constructed. In this talk, we will detail a separation of variables method along bodies of revolution that results in a sequenceof boundary integral equations along only a one-dimensional curve. The overall scheme, accelerated by the FFT, results in an overall O(N3/2) direct method for solving scattering problems from perfect electric conducting and dielectric bodies of revolution. Several numerical examples will be included, as well as an overview of the evaluation of “modal Green’s functions” and the various numerical tools needed in the construction of this solver.