Sreekanth Pannala Oak Ridge National Laboratory
Multiphase Flow Modeling
Working closely with National Energy Technology Laboratory (NETL - http://www.netl.doe.gov) in developing an open-source multiphase flow software for needs in fossil and chemical industry. For more information, please visit: http://mfix.netl.doe.gov. Co-edited a book on “Computational Gas-Solids Flows and Reacting Systems: Theory, Methods and Practice”
Predictive System Simulation Capability for Evaluating Safety and Performance of Batteries
We are developing a predictive system-level (macroscopic) 3D
petascale simulation tool based on rigorous averaging procedures to model
batteries. This detailed simulation capability will model the coupled
multiphysics phenomena (charge and thermal transport; electrochemical
reactions; mechanical stresses) across the porous 3D structure of the
electrodes (cathodes and anodes) and the solid or liquid electrolyte system
while including the nanoscale effects through closures based on resolved
quantities. The simulation tool will be validated both at the full-cell level
as well as at the secondary particle-level and give an unprecedented capability
to study the interplay between the particle-scale effects to the overall
performance and the safety of the batteries. This tool fills a critical void in
the simulation space and gives a unique capability to model batteries.
Virtual Integrated Battery Environment (VIBE)
We are developing a flexible and scalable computational framework that can integrate multiple physics models at various scales (battery pack, cell, electrodes, etc.) and provide a predictive modeling tool under the auspices of the DOE EERE's CAEBAT (CAE for Batteries) program.
Catalytic Biomass Pyrolysis
We are developing unique computational tools for simulating catalytic pyrolysis of woody biomass with sufficient chemistry, kinetics, and multi-phase hydrodynamics to interpret laboratory and pilot-scale data and evaluate potential barriers to commercial scale-up.
CASL (Consortium for Advanced Simulations of Light Water Reactors)
I am involved in the development of simulation capabilities for thermal-hydraulics and FSI (fluid structure interaction) as part of this energy simulation hub.
“High performance computing: clean coal gasifier designs using hybrid parallelization,” with M. Syamlal, C. Guenther, and A. Gel, Proceedings of Fluidization XIII, Gyeong-ju, Korea, 2010. (http://www.osti.gov/energycitations/product.biblio.jsp?osti_id=983571)
“Modeling and Simulation of Battery Systems,” with Mukherjee, P. P. and J. Turner, chapter in Handbook of Battery Materials: Editor C. Daniel. Weinheim, Wiley-VCH Verlag GmbH & Co. KGaA, 2010.
“High-Resolution Simulations of Coal Injection in a Gasifier,” with Li, T., Gel, A., Syamlal, M., and Guenther, C. Industrial & Engineering Chemistry Research, doi:10.1021/ie100519s, 2010.
“Open-source MFIX-DEM software for gas-solids flows: Part I – Verification,” with R. Garg, J. E. Galvin, and T. Li, to be submitted to Powder Technology for the special issue of multiphase flow science workshop, September 2010.
“Open-source MFIX-DEM software for gas-solids flows: Part II – Validation,” with T. Li, J. E. Galvin, and R. Garg, to be submitted to Powder Technology for the special issue of multiphase flow science workshop, September 2010.
“A generalized multi-dimensional mathematical model for charging and discharging processes in a Supercapacitor”, with S. Allu, B. Velamur Asokan and W. A. Shelton, to be submitted to Journal of Electrochemical Society, October 2010.
“Multiphase continuum formulation for gas-solids reacting flows,” with M. Syamlal, chapter in book titled “Computational Gas-Solids Flows and Reacting Systems: Theory, Methods and Practice,” Editors: S. Pannala, M. Syamlal and T. J. O’Brien, IGI Global, 2010 (Fall).
“Multiscale/Multiphysics Modeling of Biomass Thermochemical Processes,” with G. Frantziskonis and S. Simunovic, Accepted to ACS book on Computational Modeling of Lignocellulosic Biofuel Production, 2010.
“Modeling the coupling of reaction kinetics and hydrodynamics in a collapsing cavity,” with S. K. Mishra, K. Muralidharan, P. A. Deymier, G. Frantziskonis, and S. Simunovic, Ultrasonics Sonochemistry, 2010.
“Test Problem 4: 2009 Three-Dimensional Assembly Simulations Report,” with E. Popov, R. Deiterding, and B. Neykov, ORNL/TM-2009/246, November, 2009.
“Time-parallel multiscale/multiphysics framework,” with G. Frantziskonis, K. Muralidharan, P. Deymier, S. Simunovic, and P. Nukala, Journal of Computational Physics, 228, 8085–8092, 2009.
“Advanced Coal Gasifier Designs Using Large-Scale Simulations,” Proceedings of the Scientific Discovery Through Advanced Computing Conference, San Diego, CA, June 14-18, 2009, JP.
“Accelerating Clean Coal Gasifier Designs with Hybrid MPI/OpenMP High Performance Computing,” with A. Gel, S. Pannala, R. Sankaran, C. Guenther, M. Syamlal, and T. O'Brien, Proceedings of the Parallel Computational Fluid Dynamics (ParCFD), May 18-22, Moffett Field, CA, USA, 2009.
“Modeling the Collisional-Plastic Stress Transition for Bin Discharge of Granular Material,” with Sofiane Benyahia, Charles E. A. Finney, Madhava Syamlal, Stuart C. Daw, and Thomas O'Brien, Powders and Grains 2009: Proceedings of the 6th International Conference on Micromechanics of Granular Media, Golden (Colorado), AIP.
“Silicon Chemical Vapor Deposition On Macro and Submicron Powders in a Fluidized Bed,” with L. Cadoret, N. Reuge, M. Syamlal, C. Rossignol, J. Dexpert-Ghys, C. Coufort, and B. Caussat, Powder Technology, 190, pp. 185-191, 2009.
“Wavelet-Based Spatial Scaling of Coupled Reaction-Diffusion Fields” with S. K. Mishra, K. Muralidharan, P. A. Deymier, G. Frantziskonis, and S. Simunovic, International Journal for Multiscale Computational Engineering, Issue 6(4), p. 281-297, 2008.
“Multifluid Eulerian Modelling of Dense Gas-Solid Fluidized Bed Hydrodynamics: Influence of the Dissipation Parameters,” with N. Reuge, L. Cadoret, C. Coufort, M. Syamlal and B. Caussat, Chemical Engineering Science, 63 (22), pp. 5540-5551, 2008.
“Parallel-in-Time Multiscale/Multiphysics Framework,” with G. Frantziskonis, K. Muralidharan, P. Deymier, and S. Simunovic, Proc. 3rd International Conference “From Scientific Computing to Computational Engineering, 3rd IC-SCCE, Athens, 9-12 July, 2008, D. Tsahalis, Ed., pp. 1-6.
“Wavelet Based Spatial Scaling of Coupled Reaction Diffusion Fields,” with S. K. Mishra, K. Muralidharan, P. Deymier, G. Frantziskonis, and S. Simunovic, Proceedings of the 2008 ICCS conference, Lecture Notes in Computer Science, Springer.
“Filtered two-fluid models for fluidized gas-particle suspensions,” with Yesim Igci, Arthur Andrews, Sankaran Sundaresan, and Thomas O'Brien, AIChE Journal, 54(6), 1431-1448, 2008.
“Open-Source Software in Computational Research: A Case Study,” with M. Syamlal, T. J. O’Brien, S. Benyahia, and A. Gel, Modelling and Simulation in Engineering, Vol. 2008, 937542, 2008. doi:10.1155/2008/937542.
“Spatiotemporal Compound Wavelet Matrix Framework for Multiscale/Multiphysics Reactor Simulation: Case Study of a Heterogeneous Reaction/Diffusion System,” with S. K. Mishra, K. Muralidharan, S. Simunovic, C. S. Daw, P. Nukala, R. O. Fox, P. A. Deymier, and G. Frantziskonis, International Journal of Chemical Reactor Engineering, Vol. 6: A28, 2008. http://www.bepress.com/ijcre/vol6/A28.
“Dynamic compound wavelet matrix method for multiphysics and multiscale problems”, with K. Muralidharan, S. K. Mishra, G. Frantziskonis, P. A. Deymier, P. Nukala, and S. Simunovic, Phy. Rev. E, E 77, 026714, 2008.
“Effects of using two- versus three-dimensional computational modeling of fluidized beds: Part II, analysis,” with Nan Xie and Francine Battaglia, Powder Technology, 182, 14–24, 2008.
“Effects of using two- versus three-dimensional computational modeling of fluidized beds: Part I, hydrodynamics,” with Nan Xie and Francine Battaglia, Powder Technology, 182, 1–13, 2008.
Link to CV for a detailed list.
Phone: (865) 574-3129 or (865) 617-9612 (Cell Phone)
Fax: (865) 241-4811
Computer Science and Mathematics Division
Oak Ridge National Laboratory
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