In many situations, it has been observed that significant convergence improvements can be
achieved in preconditioned Krylov subspace methods by enriching them with some spectral …

In this paper, we address the solution of three‐dimensional heterogeneous Helmholtz
problems discretized with second‐order finite difference methods with application to acoustic …

In a wide number of applications in computational science and engineering the solution of
large linear systems of equations with several right-hand sides given at once is required. …

The spectral analysis is a basic tool to characterise the behaviour of any convection scheme.
By nature, the solution projected onto the Fourier basis enables to estimate the dissipation …

This work is concerned with the development and study of a minimum residual norm
subspace method based on the generalized conjugate residual method with inner …

We propose a variant of the block GMRES method for the solution of linear systems of
equations with multiple right-hand sides. We investigate a deflation strategy to detect when a …

Direct Numerical Simulation of turbulent flows is a computationally demanding problem that
requires efficient parallel algorithms. We investigate the applicability of the time-parallel …

We propose a “constrained” least-squares approach to estimate regional maps of equivalent-water
heights by inverting GRACE-based potential anomalies at satellite altitude. …

We propose a method for representing spatially correlated observation errors in variational
data assimilation. The method is based on the numerical solution of a diffusion equation, a …

We consider the design of structure-preserving discretization methods for the solution of
systems of boundary controlled Partial Differential Equations (PDEs) thanks to the port-…