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Jennifer Sinclair Curtis
Chair and Professor
Ph.D., 1989, Princeton University
Modeling of Particle-laden Flows
Computational Fluid Dynamics
Dem Simulations
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Brief Description of Current Research
Our research work focuses on the development and validation of numerical
models for the prediction of fluid-particle flow phenomena. Particle flow
processes pervade the pharmaceutical, biomedical, chemical, mining,
agricultural, food processing and petroleum industries.
One of our most notable successes is the adoption of our group’s multiphase
flow models by the two key commercial computational fluid dynamics (CFD)
software package vendors (Fluent and AEA Technology). We are currently
expanding the capability of these models to describe particulate systems that
contain highly non-spherical, cohesive, and/or rough particles with a size
distribution that evolves with time due to chemical reaction, particle
agglomeration, or attrition. In addition, we are developing models which
describe both particle clustering, a flow phenomenon characteristic of
dense-phase particle transport, as well as the effect of the interstitial fluid
on particle-particle and particle-wall interactions. We also employ the
Discrete Element Method (DEM) to simulate the details of the motion of
individual particles to give insight into both the development of closure
relations for the CFD models, as well as phenomena such as particle segregation
and mixing in blenders and hoppers.
Our group also has a complementary experimental research program involving
detailed, non-intrusive flow measurements using laser Doppler velocimetry and
flow visualization. These measurements allow us to explore, in a highly
controlled fashion, a range of effects such as the influence of the particle
size distribution and the effect of the interstitial fluid on particle velocity
fluctuations. Refractive index matching is used for liquid-solid systems.
Selected Publications
- "DEM Simulation of Particle Clustering at High Solids Concentration"
(Keynote Paper), Proceedings of the 2005 ASME Fluids Engineering
Conference, M. E. Lasinski, J. S. Curtis, and J. F. Pekny, Paper No.
FEDSM2005-77279 (2005).
- “Measurement and Prediction of Pressure Drop in Pneumatic Conveying:
Effect of Particle Characteristics, Mass Loading, and Reynolds Number”,
Henthorn, K., K. Park, and J. S. Curtis, I & EC Research, Vol. 44,
5090 (2005).
- “Reynolds Number Dependence of Gas-Phase Turbulence in Gas-Particle
Flows”, Int. J. Multiphase Flow, Hadinoto, K., E. Jones, C. Yurteri,
and J. S. Curtis, Vol. 31, 416 (2005).
- “Stress Results from Two-Dimensional Granular Shear Flow Simulations
using Various Collision Models”, Ketterhagen, W., J. S. Curtis and C.
Wassgren, Phys. Rev. E., Vol. 71, 061307 (2005).
- "Effect of Interstitial Fluid on Particle-Particle Interactions in
Kinetic Theory", I & EC Research, Hadinoto, K. and J. Curtis,Vol. 43,
3604 (2004).
- “Effect of System Size on Particle-Phase Stress and Microstructure
Formation", M. E. Lasinski, J. S. Curtis, and J. F. Pekny, Physics of
Fluids, Vol. 16, 265 (2004).
- “Modeling Particle-Laden Flows: A Research Outlook” (Invited), J.S.
Curtis and B. van Wachem, AIChE Journal, Vol. 50, 2638 (2004).
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