Picture of Emil Constantinescu

Emil Mihai
Office #: 2151

Computational Mathematician
Mathematics and Computer Science
Argonne National Laboratory

Fellow of the Computation Institute
University of Chicago



- Time stepping
- Uncertainty
ANL Stuff
I am Previously,

I am a member of:

  • SIAM SISC associate editorial board,
  • STATMOS (Research Network for Statistical Methods for Atmospheric and Oceanic Sciences) as Argonne National Laboratory's node director.


Check out the top of best places to be a postdoc >> [link]. Also check out some of the current postdocs' profiles [link] and a piece on national labs.


Cool video on electric grids by Mihai Anitescu Cool video on climate models by Rob Jacob

Research Interests:

Time-stepping for PDEs and ODEs
Multirate - GLM - IMEX
Implementation in PETSc library

Uncertainty Quantification,
Data Assimilation & Sensitivity Analysis

Modeling and Simulation
Multirate &IMEX
Forecast page

Projects - active:

Scalable Implicit-Explicit (IMEX) Algorithms and Software for Time-Dependent Multimodel PDEs

Quantifying Global Structural Errors in Predictive Scientific Simulations

Multifaceted Mathematics for Complex Energy Systems (M2ACS)
Efficient High-Order Time-Integrators for Local High-Order Discretization Methods Grid Level Energy Storage for Integration of Renewable Energy  

Projects - retired:

Cloud processes in global climate models

High Fidelity "Faster Than Real-Time" Simulator for Predicting Power System Dynamic Behavior

Watt-sun: A Multi-scale, Multi-Model, Machine-Learning Solar Forecasting Technology
Climate Science for a Sustainable Energy Future: Crop Model in the Earth System Model    



Recent papers (see all):

  • Emil Constantinescu, "Generalizing global error estimation for ordinary differential equations by using coupled time-stepping methods." Journal of Computational and Applied Mathematics In Press, 2017. (https://arxiv.org/abs/1503.05166)


  • Shrirang Abhyankar, Emil M. Constantinescu, Barry Smith, Alexander J. Flueck, and Daniel A. Maldonado "Parallel dynamics simulation using a Krylov-Schwarz linear solution scheme." IEEE Transactions on Smart Grid Special Issue on High Performance Computing (HPC) Applications for a More Resilient and Efficient Power Grid, Vol. 8(3), Pages 1378-1386, 2017.


  • Hong Zhang*, Shrirang S. Abhyankar, Emil M. Constantinescu, and Mihai Anitescu, "Discrete adjoint sensitivity analysis of power system dynamics." IEEE Transactions on Circuits and Systems--I: Regular Papers, Vol. 64(5), Pages 1247-1259, 2017.


  • Noemi Petra, Cosmin G. Petra, Zheng Zhang*, Emil M. Constantinescu, and Mihai Anitescu, "A Bayesian approach for parameter estimation with uncertainty for dynamic power systems." IEEE Transactions on Power Systems, Vol. 32(4), Pages 2735-2743, 2017.


  • Simone Marras, Michal A. Kopera, Emil M. Constantinescu, Jenny Suckale, and Francis X. Giraldo "A continuous/discontinuous Galerkin solution of the shallow water equations with dynamic viscosity, high-order wetting and drying, and implicit time integration." Submitted, 2016.


  • Debojyoti Ghosh* and Emil M. Constantinescu, "Nonlinear compact finite-difference schemes with semi-implicit time stepping." Springer's Lecture Notes in Computational Science and Engineering (LNCSE) Series, ICOSAHOM 2014, Vol. 106, Pages 237-245, 2015.


  • Debojyoti Ghosh* and Emil M. Constantinescu, "Semi-implicit time integration of atmospheric flows with characteristic-based flux partitioning." SIAM Journal on Scientific Computing (SISC), Vol. 38(3), Pages A1848-A1875, 2016. [Preprint # ANL/MCS-P5417-1015; http://arxiv.org/abs/1510.05751].


  • Julie Bessac*, Emil M. Constantinescu, and Mihai Anitescu, "Stochastic simulation of predictive space-time scenarios of wind speed using observations and physical models." Annals of Applied Statistics, Submitted, 2017. [Preprint # ANL/MCS-P5432-1015, http://arxiv.org/abs/1511.09416].


  •  Nan Li, Canan Uckun, Emil M. Constantinescu, John Birge, Kory W. Hedman, and Audun Botterud "Flexible operation of batteries in power system scheduling with renewable energy." IEEE Transactions on Sustainable Energy, 2016.


  • Peng Wang, David Barajas-Solano, Emil Constantinescu, Shrirang S. Abhyankar, Debojyoti Ghosh*, Barry Smith, Zhenyu Huang, and Alexandre Tartakovsky, "Probabilistic density function method for stochastic ODEs of power systems with uncertain power input"; SIAM/ASA Journal on Uncertainty Quantification (JUQ), Vol. 3(1), Pages 873-896, 2015.


  • Debojyoti Ghosh* and Emil M. Constantinescu, "A well-balanced conservative finite-difference algorithm for atmospheric flows." AAIA Journal, Accepted, 2015. [Preprint # ANL/MCS-P5371-0615].


  • Franck Cappello, Emil Constantinescu, Paul Hovland, Tom Peterka, Carolyn Phillips, Marc Snir, Stefan Wild, Improving the trust in results of numerical simulations and scientific data analytics,” MCS Report, ANL/MCS-TM-352, Published Online April 2015.


  • Ilias Bilionis*, Beth A. Drewniak, and Emil M. Constantinescu, "Crop physiology calibration in the CLM." Vol 8(4), Pages 1071-1083, Geoscientific Model Development, 2015.


  • Debojyoti Ghosh*, Emil M. Constantinescu, and Jed Brown, "Efficient implementation of non-linear compact schemes on massively-parallel platforms." SIAM Journal on Scientific Computing (SISC), Vol. 37(3), Pages C354-C383, 2015. -> Technical report version.


  • {WEB}Ilias Bilionis*, Emil M. Constantinescu, and Mihai Anitescu, "Data-driven model for solar irradiation based on satellite observations." Vol. 110, Pages 22-38, Solar Energy, 2014.


  • Mihai Anitescu, Xiaoyan Zeng*, and Emil M. Constantinescu, "A low-memory approach for best-state estimation of hidden Markov models with model error." SIAM Journal on Numerical Analysis (SINUM), Vol. 52(1), Pages 468-495, 2014.


Research Scientists:


Hong Zhang (2016-, Sensitivity analysis - PETSc)
Oana Marin (2016-, CFD, spectral elements - PETSc; co-supervised with Barry Smith)



Julie Bessac (2014-, Data analysis, Statistics)


Hong Zhang (2014-2016, Sensitivity analysis - PETSc)
Zheng Zhang (2015-2016, UQ)
Debojyoti Ghosh
(2013-2015, Time stepping, CFD - PETSc)
Ilias Bilionis (2013-2014, Uncertainty Quantification)
Xiaoyan Zeng (2012, UQ - UQ for the crop model in the CESM - community Earth system model)
Shrirang Abhyankar (2012-2014, Time stepping and power grid applications - PETSc)

Grad students in practicum:

Joey Hart (2016, graduate, Applied Mathematics, North Carolina State University)
Ahmed Attia (2015, graduate, Computer Science, Virginia Tech)
Hong Zhang (2012, graduate, Computer Science, Virginia Tech)
Alexandru Cioaca (2010, 2011, graduate, Computer Science, Virginia Tech)
Jeffrey Steward (2010, graduate, Mathematics, Florida State University)
Matthew Rocklin (2009, graduate, Computer Science, University of Chicago)


updated January 2017