EULAG:
a
computational
model
for
multiscale flows
Joseph M. Prusa1
Mellon Visiting Scholar
EULAG (Eulerian/semi-Lagrangian fluid solver) is an established computational model for simulating
thermo-fluid flows across a wide range of scales and physical scenarios. In this seminar some key
model characteristics (nonoscillatory integration algorithms, robust elliptic solver, and generalized
coordinate formulation enabling grid adaptivity technology) will be highlighted. EULAG has a proven
record of successful applications in the areas of turbulence, urban flows, gravity wave dynamics,
flows with complex/moving boundaries, cloud microphysics and dynamics, global atmospheric, and
basic fluid dynamics of incompressible fluids. EULAG has been used as the dynamic core for the
Community Atmospheric Model 3.1. Derivatives of EULAG also have been applied to simulations of
visco-elastic waves in the human brain, oceanic flows, stellar gas dynamics, and solar MHD. A select
subset of applications will be shown to demonstrate EULAG’s performance both in terms of accuracy
and
scalability
on
massively
parallel
processor
architectures.
___________________________________________________________________________
1
Teraflux
Corporation,
Boca
Raton,
FL
USA;
UCT address: Department of Environmental and Geological Sciences, Rm 4.13
jprusa@bellsouth.net