Applied Math Seminar (Stephen Lau)
Event Type:
Seminar
Speaker:
Stephen Lau
Event Date:
Monday, September 19, 2022 -
3:00pm to 4:00pm
Location:
SMLC 356
Audience:
General PublicFaculty/StaffStudents
Event Description:
Speaker: Stephen Lau (U. of New Mexico)
Title: Dual perturbation approach for direct spectral solution of harmonic problems on a block
Abstract: We present a new direct (or quasi-direct) strategy for solving three-dimensional Poisson and Helmholtz problems posed on a Cartesian block. The approach starts with a spectral approximation of either problem involving modal Chebyshev integration matrices. It is low-memory, empirically well-conditioned, and offers some possibility for near optimal complexity.