High performance computing key to
study of turbulent, multiphase flows
John Palmore Jr.
Assistant
Professor
Research
Focus:
CFD; Direct
numerical simu-
lation; High
performance
computing;
Multiphase
flows; Turbu-
lence; Phase
change
The Palmore Research Group devel-
ops high-fidelity numerical methods
to study turbulent and multiphase
flows. Our primary research focus is
on fluid flows related to energy and
the environment. We study topics
including fuel combustion (spray
dynamics), fuel production (bubble
column reactors), and energy conver-
sion systems (gas turbines engines). In
developing our numerical methods we
rely heavily on massively parallel, high
performance computing techniques
to accelerate our code. As such, our
work lies at the nexus of engineering,
mathematics, and computer science
Joseph
Meadows
Assistant
Professor
Research
Focus:
Combustion;
Heat transfer;
Advanced laser
diagnostics;
Thermoacous-
tics; Pressure
gain combus-
tion
Taming supersonic jet noise
Supersonic exhaust from military aircraft produce high levels of noise, which pose an occupa-
tional health risk for personnel and unwanted noise for local communities. Development of
effective noise control strategies require fundamental tools for engineering design and optimiza-
tion. Theoretical noise models and computational predication tools will play an integral role in the
development of noise-control systems; however, advanced experimental diagnostic techniques
are required to develop theoretical models. Laboratory environments are ideal for investigating
supersonic jet noise due to the ability to control individual variables.
The research will investigate the impacts of supersonic jet noise at afterburner conditions, so
laboratory experiments producing boundary conditions similar to those produced by afterburn-
ers are required. The proposed research will develop a secondary combustion zone/afterburner
located upstream of a supersonic nozzle and downstream of a main combustion system with the
ability to generate entropy waves (i.e. temperature/density fluctuations) by acoustically driving
the afterburner fuel flow rates, as well as operate without acoustically forced entropy waves.
Unsteady pressure and OH* chemiluminescence measurements will be acquired within the
afterburner, and sound pressure measurements, ultra-high speed rainbow schlieren deflectom-
etry (RSD) measurements, and time-resolved Doppler global velocimetry measurements will be
acquired downstream of the nozzle exit.
Revised and Corrected, Nov. 2019 17