Recent Advances in the SEM for Turbulent Flow Simulations

Paul Fischer, Argonne National Laboratory and University of Illinois Urbana-Champaign

We present recent developments in application of the spectral element method (SEM) for the simulation of turbulent flows at petascale and beyond. We begin with a brief overview of the SEM as implemented in Nek5000.  We then discuss recent algorithmic advances, including:

- Efficient FEM-based preconditioners

- Nonconforming overlapping domain decomposition

- Multirate timestepping for for the incompressible Navier-Stokes equations

- SEM-based compressible Navier-Stokes solutions

- Nonlinear stabilization

- High-performance GPU implementations

- Reduced-order models


Miscellaneous Information: 

This seminar will be streamed.

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