145 citations · 389 across the 9 of their papers we have counts for
3 papers · 1 filter
Efficient approximation of sparse Jacobians for time-implicit reduced order models
Răzvan Ştefănescu, Adrian Sandu
This paper introduces a sparse matrix discrete interpolation method to effectively compute matrix approximations in the reduced order modeling framework. The sparse algorithm devel…
Comparison of POD reduced order strategies for the nonlinear 2D Shallow Water Equations
Răzvan Ştefănescu, Adrian Sandu, Ionel M. Navon
This paper introduces tensorial calculus techniques in the framework of Proper Orthogonal Decomposition (POD) to reduce the computational complexity of the reduced nonlinear terms.…
POD/DEIM Reduced-Order Strategies for Efficient Four Dimensional Variational Data Assimilation
Răzvan Ştefănescu, Adrian Sandu, Ionel Michael Navon
This work studies reduced order modeling (ROM) approaches to speed up the solution of variational data assimilation problems with large scale nonlinear dynamical models. It is show…