ALCF Science 1 - Argonne National Laboratory

argonne leadership computing facility
Engineering
A Center for Turbulence Research - Argonne Leadership Computing
Facility Collaboratory for Very Large Scale Turbulence Simulations
on Petascale Computing Platforms
New turbulence collaboration enhances energy security
The Center for Turbulence Research (CTR) and the Argonne Leadership
Computing Facility (ALCF) have joined forces to enhance the state
of the art of turbulence simulations by harnessing the computing
power of the Blue Gene/P via allocations from the ASCR Leadership
Computing Challenge (ALCC) program.
The collaboration will focus on high-risk, high-payoff turbulence
simulations linked to advancing national energy security, including
studies of aerodynamic noise reduction in next-generation aircraft
propulsion systems, heat transfer in advanced energy systems, and
related simulations.
Reducing jet engine noise
Initially, the CTR-ALCF collaboration will study the effects of chevrons
on turbulent mixing of jet engine exhaust streams and on the role
chevrons play in noise suppression. Chevrons—serrated geometric
edges installed on aircraft engines—greatly reduce noise by mixing
exhaust jet streams. Their design, however, must balance their role in
reducing noise with performance reductions they might cause.
New simulations aim
to tell the full story
To date, most simulations
model the effects of chevrons
by source-and-sink terms in
the governing equations rather
than by resolving their complex,
small-scale geometric details. The
proposed simulations aim to fully
resolve the effects of the chevrons
in a jet engine to capture the
enhanced shear layer mixing the
chevrons generate and, in turn, to
evaluate possible noise-mitigation
strategies.
ALCC Allocation:
50 Million Hours
ASCR LEADERSHIP
COMPUTING CHALLENGE
27
Models for the solid electrolyte interphase in Li batteries:
Amorphous alumina on graphite.
Contact Parviz Moin
Center for Turbulence Research, Stanford University | moin@stanford.edu