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Wednesday, March 15 • 4:00pm - 4:20pm
Algorithms and Performance: Weight-Adjusted Discontinuous Galerkin methods for Acoustic and Elastic Wave Propagation

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Discontinuous Galerkin methods allow for high order accurate simulations of wave propagation in heterogeneous media and complex geometries. However, models of media and geometry are typically approximated with low order accuracy, as high order approximations of these models can introduce high storage costs or the loss of stability and high order accuracy.

In this talk, we describe how Weight-adjusted discontinuous Galerkin (WADG) methods allow for high order accurate approximations of heterogeneous media and geometry while preserving low storage costs, energy stability, and high order accuracy. Numerical results confirm the accuracy and computational performance of WADG methods for benchmark problems in acoustic and elastic wave propagation.

Moderators
avatar for Henri Calandra

Henri Calandra

Total
Henri Calandra obtained his M.Sc. in mathematics in 1984 and a Ph.D. in mathematics in 1987 from the Universite des Pays de l’Adour in Pau, France. He joined Cray Research France in 1987 and worked on seismic applications. In 1989 he joined the applied mathematics department of... Read More →
avatar for Ernesto Prudencio

Ernesto Prudencio

Senior Software Engineer, Schlumberger
Ernesto E. Prudencio combines a BSc in electronics engineering (1990, Brazil), a MSc in applied mathematics (domain decomposition methods, 2001, Brazil), and a PhD in computer science / numerical analysis (PDE-constrained optimization, 2005, Boulder, CO), with professional experience... Read More →

Speakers


Wednesday March 15, 2017 4:00pm - 4:20pm
Room 280

Attendees (5)