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6 papers · 2 filters
A constructive approach to Schaeffer's conjecture
Oleg Szehr, Rachid Zarouf
J.J. Schaeffer proved that for induced matrix norm and invertible the inequality \[\left|\det T\right|\left\Vert T^{-1}\right\Vert \leq\mathcal{S}\left\Vert T\…
Convergence of the mac scheme for variable density flows
Thierry Gallouët, Raphaele Herbin, Jean-Claude Latché +1
We prove in this paper the convergence of an semi-implicit MAC scheme for the time-dependent variable density Navier-Stokes equations.
Two models for the computation of laminar flames in dust clouds
Dionysios Grapsas, Raphaele Herbin, J Latché
We address two models for the simulation of dust clouds premixed combustion: the first one consists in usual balance equations, to derive the second one, we suppose that the soluti…
Analysis of a fractional-step scheme for the P1 radiative diffusion model
Raphaele Herbin, Thierry Gallouët, Jean-Claude Latché +1
We address in this paper a nonlinear parabolic system, which is built to retain the main mathematical difficulties of the P1 radiative diffusion physical model. We propose a finite…
Newton's method in practice II: The iterated refinement Newton method and near-optimal complexity for finding all roots of some polynomials of very large degrees
Marvin Randig, Dierk Schleicher, Robin Stoll
We present a practical implementation based on Newton's method to find all roots of several families of complex polynomials of degrees exceeding one billion () so that the ob…
Convergence of the MAC scheme for the incompressible Navier-Stokes equations
Thierry Gallouët, Raphaele Herbin, J. -C Latché +1
We prove in this paper the convergence of the Marker and cell (MAC) scheme for the dis-cretization of the steady-state and unsteady-state incompressible Navier-Stokes equations in…