Title :
Using filters to design absorbing boundary conditions for high-order CEM
Author :
White, Michael D. ; Visbal, Miguel R.
Author_Institution :
Ohio Aerosp. Inst., Cleveland, OH, USA
fDate :
3/1/2004 12:00:00 AM
Abstract :
Sharp low-pass filters used to stabilize high-order numerical algorithms have been adapted to provide a simple yet robust absorbing boundary with negligible impact on the interior solution. By taking advantage of energy transfer to high frequencies caused by rapidly stretched meshes, the artificially reflected waves are annihilated while preserving the content in the region of interest.
Keywords :
boundary-value problems; finite difference methods; low-pass filters; absorbing boundary conditions; energy transfer; high frequencies; high-order CEM; high-order finite-difference methods; high-order numerical algorithms; interior solution; negligible impact; novel methodologies; rapidly stretched meshes; reflected waves; sharp low-pass filters; Boundary conditions; Design methodology; Energy exchange; Finite difference methods; Frequency; Laboratories; Low pass filters; Magnetic separation; Robustness; Spatial resolution;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.824715
