Welcome


Sreekanth Pannala Oak Ridge National Laboratory

Research Staff Member of the Computational Mathematics Group
of the Computer Science and Mathematics Division of Oak Ridge National Laboratory

Recent Activites?

Multiscale Mathematics Research
Principal Investigator on DOE MICS multiscale and mathematics research awarded project on “Micro-Mesoscopic Modeling of Heterogeneous Chemically Reacting Flows (MMM-HCRF) Over Catalytic/Solid Surfaces”. Working closely with University of Arizona, Ames Laboratory and NETL in developing a generalized multiscale framework to model heterogeneous chemically reacting flows.
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://www.mfix.org.

Fluidized Bed Chemical Vapor Deposition Modeling (FBCVD) for Coating Nuclear Pellets for Next Generation Nuclear Plants
Principal Investigator for the FBCVD modeling team and involved in developing the components needed to model the complicated coating process.
 
Cross-Cut Lean Exhaust Emissions Reduction Simulations
Co-PI on the CLEERS (http://www.cleers.org) effort at ORNL. CLEERS is a R&D focus project of the DOE Diesel Cross-Cut Team. The overall objective is to promote development of improved computational tools for simulating realistic full-system performance of lean-burn engines and the associated emissions control systems.

Recent Publications:

“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, Accepted March 2008.

“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, P. Nukala, S. Simunovic, P. A. Deymier, and G. Frantziskonis, 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.

“In situ time-resolved measurements of carbon nanotube and nanohorn growth,” with D. B. Geohegan, A. A. Puretzky, D. Styers-Barnett, H. Hu, B. Zhao, H. Cui, C. M. Rouleau, G. Eres, J. J. Jackson, R. F. Wood, and J. C. Wells, phys. stat. sol. (b), 244, No. 11, 3944–3949 / DOI 10.1002/pssb.200776204, 2007.

“Silicon CVD on powders in fluidized bed: Experimental and multifluid Eulerian modelling study,” with Loïc Cadoret, Nicolas Reuge, Madhava Syamlal, Carole Coufort and Brigitte Caussat, Surface and Coatings Technology, 201, 8919, 2007.

“Simulating the Dynamics of Spouted Bed Nuclear Fuel Coaters,” with C. S. Daw, C. E. A. Finney, D. Boyalakuntla, T. J. O'Brien and M. Syamlal. Chem. Vap. Deposition, 13, 481-490, 2007.

“Simple model of the interrelation between single- and multi-wall carbon nanotube growth rates for CVD process,” with R.F. Wood, J.C. Wells, A. A. Puretzky and D. B. Geohegan, Physical Review B, B 75, 235446, 2007. Also appears in Virtual Journal of Nanoscale Science & Technology, 16, 2, 2007.

“Segregated Methods for Two-Fluid Models,” with A. Prosperetti, S. Sundaresan, and D. Z. Zhang, Book chapter in Computational Methods for Multiphase Flows; Editors: A. Prosperetti and G. Tryggvason; Publisher: Cambridge University Press, 2007.

“Comparison of Frameworks for Next Generation Multiphase Flow Solver, MFIX. A Group Decision-Making Multiphase Flow Solver,” with A. Gel, M. Syamlal, T. J. O'Brien and E. S. Gel, Concurrency and Computation: Practice and Experience, Issue 19 (5), p. 609-624 Sp. Iss. SI, 2007.

“Bifurcation Analysis of Bubble Dynamics in Fluidized Beds,” with Peter Blomgren, Antonio Palacios, Bing Zhu, Stuart Daw, Charles Finney and John Halow,  CHAOS, 17 (1), 013120, 2007.

“Micro-Mesoscopic Modeling of Heterogeneous Chemically Reacting Flows (MMM-HCRF) Over Catalytic/Solid Surfaces: 2007 Annual Progress Report,” with S. Simunovic, C. S. Daw, P. K. Nukala, G. Frantziskonis, S. Mishra, P. Deymier, R. Fox, T. J. O’Brien and M. Syamlal, 2007.

“Process Modeling Phase II Summary Report for the Advanced Gas Reactor Fuel Development and Qualification Program,” with Charles E. A. Finney and C. Stuart Daw, ORNL Technical Report for INL MPO 00056009, 2006.

“Wavelet-based Spatiotemporal Multi-scaling in Diffusion Problems with Chemically Reactive Boundary,” with George Frantziskonis, Sudib K. Mishra, Srdjan Simunovic, C. Stuart Daw, Phani Nukala, Rodney O. Fox, and Pierre A. Deymier, International Journal for Multiscale Computational Engineering, Issue 5-6, p. 755-770, 2006.

“Micro-Mesoscopic Modeling of Heterogeneous Chemically Reacting Flows (MMM-HCRF) Over Catalytic/Solid Surfaces: 2006 Annual Progress Report,” with S. Simunovic, C. S. Daw, P. K. Nukala, G. Frantziskonis, S. Mishra, P. Deymier, R. Fox, T. J. O’Brien and M. Syamlal, 2006.

“ORNL FY06 Progress Report on FBCVD Process Modeling for the Advanced Gas Reactor Fuel Development and Qualification Program,” with Charles E. A. Finney, Dhanunjay Boyalakuntla and C. Stuart Daw, Oak Ridge National Laboratory Technical Report, ORNL/CF-06/06,  2006.

“Process Modeling Phase I Summary Report for the Advanced Gas Reactor Fuel Development and Qualification Program,” with C. S. Daw, D. Boyalakuntla and C. E. A. Finney, ORNL/TM-2006/520, March, 2006.


Link to CV for a detailed list.

Ways to Contact

Oak Ridge National Laboratory / (pannalas@ornl.gov)