Dimitrios V. Papavassiliou
Research Interests
Computational
Transport Processes Webpage
The focus of my research is on the fundamental understanding
and modeling of transport processes with industrial
and environmental interest. Novel computational methods
are developed and applied to explore turbulent transport
of mass and heat, flow and mass transfer in bioreactors,
heat transfer in micro- and nano-fluidics, and flow
and transport through porous media.
Numerical experiments are conducted in a virtual
laboratory. Our methods provide excellent measurements
for turbulent channel and plane Couette flow, we can
measure heat and mass transfer in these channels and
we can monitor the trajectories of hundreds of thousands
of particles. Our Lagrangian scalar tracking (LST)
methodology has recently been used to investigate
flow effects on the progress of chemical reactions,
to study the transport of nutrients in porous scaffolds
used for bone tiussue growth, and to explore the thermal
properties of carbon nanotube composite materials.
We are also employing multiscale methods for transport
through porous materials. The flow is simulated using
appropriate methods for each important physical scale.
High End Computers are utilized to conduct the numerical
experiments and to interpret the data. Parallel to
the development of prototype software, off-the-shelf
software is used to predict flows that can improve
industrially important process, such as melt-blowing,
or can predict hemodynamics, such as blood flow in
the human carotid or the human renal arteries.
Selected Publications
Nguyen, K.T., and D.V. Papavassiliou, “Effects
of a reacting channel wall on turbulent mass transfer,”
Int. J. Heat Mass Transf., 51, 2940-2949, 2008.
Voronov, R., Papavassiliou, D.V., and L.L. Lee, “A
Review of Fluid Slip over Superhydrophobic Surfaces
and its Dependence on Contact Angle,” Ind. Eng.
Chem. Res., 47(8), 2455-2477, 2008.
Duong, H.M., Papavassiliou, D.V., Mullen, K.J. and
S. Maruyama, “Computational modeling of thermal
conductivity of single walled carbon nanotube polymer
composites,” Nanotechnology, 19(6), Art. No.
065702, 2008.
Nguyen, K.T., Clark, C.D., Chancellor, T.J., and
D.V. Papavassiliou, “Carotid geometry effects
on blood flow and on risk for vascular disease,”
J. of Biomechanics, 41, 11-19, 2008.
Krutka, H.M., Shambaugh, R.L., and D.V. Papavassiliou,
“Effects of the polymer fiber on the flow field
from a slot melt blowing die,” Ind. Eng. Chem.
Res., 47(3), 935-945, 2008.
Ford, A., and D.V. Papavassiliou, "Flow around
surface-attached Carbon Nanotubes," Ind. Eng.
Chem. Res., 45(5), 1797-1804, 2006.
Mitrovic, B.M., Le, P.M., and D.V. Papavassiliou,
"On the Prandtl or Schmidt number dependence
of the turbulence heat or mass transfer coefficient,"
Chem. Eng. Sci., 59(3), 543-555, 2004.
Areas of Research / Energy
and Chemicals / Facilities
Campus facilities:
Several Linux clusters available through the OU
Center for Supercomputing Education and Research
Off-Campus facilities:
TeraGrid allocations (http://www.teragrid.org/)
and National Center
for Supercomputing Applications computing accounts
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