146 citations · 198 across the 25 of their papers we have counts for
28 papers
Scalable Implicit Solvers with Dynamic Mesh Adaptation for a Relativistic Drift-Kinetic Fokker-Planck-Boltzmann Model
Johann Rudi, Max Heldman, Emil M. Constantinescu +2
In this work we consider a relativistic drift-kinetic model for runaway electrons along with a Fokker-Planck operator for small-angle Coulomb collisions, a radiation damping operat…
Efficient Computation of Power System Maximum Transient Linear Growth
Daniel Adrian Maldonado, Emil Constantinescu, Junbo Zhao +1
Existing methods to determine the stability of a power system to small perturbations are based on eigenvalue analysis and focus on the asymptotic (long-term) behavior of the power…
GPU-Accelerated DNS of Compressible Turbulent Flows
Youngdae Kim, Debojyoti Ghosh, Emil M. Constantinescu +1
This paper explores strategies to transform an existing CPU-based high-performance computational fluid dynamics solver, HyPar, for compressible flow simulations on emerging exascal…
Learning Subgrid-scale Models with Neural Ordinary Differential Equations
Shinhoo Kang, Emil M. Constantinescu
We propose a new approach to learning the subgrid-scale model when simulating partial differential equations (PDEs) solved by the method of lines and their representation in chaoti…
A scalable space-time domain decomposition approach for solving large-scale nonlinear regularized inverse ill-posed problems in 4D variational data assimilation
Luisa D'Amore. Emil Constantinescu, Luisa Carracciuolo
We develop innovative algorithms for solving the strong-constraint formulation of four-dimensional variational data assimilation in large-scale applications. We present a space-tim…
Multirate Partitioned Runge-Kutta Methods for Coupled Navier-Stokes Equations
Shinhoo Kang, Alp Dener, Aidan Hamilton +3
Earth system models are complex integrated models of atmosphere, ocean, sea ice, and land surface. Coupling the components can be a significant challenge due to the difference in p…