A Low-Storage PML Implementation within a High-order Discontinuous Galerkin Time-Domain Method
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
King Abdullah University of Science and Technology (KAUST),Division of Computer, Electrical, and Mathematical Science, and Engineering (CEMSE),Saudi Arabia,23955-6900
Electrical Engineering Program
Physical Science and Engineering (PSE) Division
KAUST Grant Number2016-CRG5-2953
Permanent link to this recordhttp://hdl.handle.net/10754/667549
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AbstractThe perfectly matched layer (PML) is one of the most popular domain truncation techniques used by wave equation solvers. PML implementations often use smooth-varying attenuation coefficients to achieve desired levels of accuracy and efficiency by reducing numerical reflection and PML thickness, respectively. For a discontinuous Galerkin time-domain (DGTD) scheme, this approach requires storing a different mass matrix for every mesh element, and therefore significantly increases the memory footprint. In this work, an efficient implementation of PML, which makes use of weight-adjusted approximation to account for smooth-varying attenuation coefficients, is developed. The proposed scheme results in a DGTD scheme with a small memory footprint while maintaining the high-order accuracy of the solution using a thin PML.
CitationChen, L., Ozakin, M. B., & Bagci, H. (2020). A Low-Storage PML Implementation within a High-order Discontinuous Galerkin Time-Domain Method. 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting. doi:10.1109/ieeeconf35879.2020.9330033
SponsorsThis publication is supported by the KAUST OSR under Award No 2016-CRG5-2953. The authors would like to thank the KAUST Supercomputing Laboratory (KSL) for providing the required computational resources.
Conference/Event name2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting