Generalized non-reflecting radiation boundary conditions: Numerical implementation

Author

Tran, T.M. ; Brunner, Stephan ; Alberti, Stefano ; Braunmueller, F. ; Genoud, J. ; Hogge, J.-P. ; Tran, M.Q.

Author_Institution

Centre de Rech. en Phys. des Plasmas, Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland

fYear

2014

fDate

14-19 Sept. 2014

Firstpage

1

Lastpage

2

Abstract

A numerical procedure to implement non-reflecting radiation boundary conditions, based on the Laplace Transform, is described in details and tested successfully on a simple two frequencies test problem. The method is then implemented in the time-dependent gyrotron simulation code TWANG. In the case for which the code exhibits a multi-frequency spectrum with the same transverse mode, it is shown that the reflection of these frequencies at the radiating boundary can be effectively suppressed by this method.

Keywords

Laplace transforms; gyrotrons; Laplace transform; TWANG; generalized nonreflecting radiation boundary conditions; multifrequency spectrum; numerical procedure; time-dependent gyrotron simulation code; transverse mode; Boundary conditions; Cavity resonators; Frequency-domain analysis; Gyrotrons; Numerical models; Oscillators; Plasmas;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on

Conference_Location

Tucson, AZ

Type

conf

DOI

10.1109/IRMMW-THz.2014.6956501

Filename

6956501