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Special ACM Seminar

Monday, February 13, 2023
11:00am to 12:00pm
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Annenberg 105
Towards the Ultimate Solver(s) for Wave Equations in the Time Domain
Thomas Hagstrom, Professor of Mathematics, Center for Research Computing, Southern Methodist University,

Efficient time-domain solvers for wave propagation problems must include three crucial components:

i. Robust high-resolution volume discretizations applicable in complex geometry (i.e. on grids that can be generated efficiently) - we believe that high-resolution methods enabling accurate simulations with minimal dofs-per-wavelength are necessary to solve difficult 3 + 1-dimensional problems with the possibility of error control.

ii. Radiation boundary conditions which provide arbitrary accuracy at small cost (spectral convergence, weak dependence on the simulation time and wavelength)

iii. Algorithms for directly propagating the solution to remote locations - avoid sampling the wave whenever possible.

In this talk we will discuss recent developments in all three areas, including our own work on on high-order energy stable volume discretization methods and the construction of optimal local radiation boundary conditions.

For more information, please contact Diana Bohler by phone at 16263951768 or by email at [email protected].