LANS Informal Seminar: Paul Fischer

Seminar Title: Recent Advances in the SEM for Turbulent Flow Simulations
Speaker: Paul Fischer, Blue Waters Professor, Depts. of Computer Science and Mechanical Science & Engineering, UIUC, Senior Computational Scientist, MCS/ANL

Date/Time: 2019-07-24 10:30
Location: Bldg. 240, Rm. 1404-05

Description:
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