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most citedNew determination of the fine structure constant and test of the quantum electrodynamics

558 citations

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17 papers · 1 filter

math.NA2024★ 2 cited

Generalizing the SINDy approach with nested neural networks

Camilla Fiorini, Clément Flint, Louis Fostier +4

Symbolic Regression (SR) is a widely studied field of research that aims to infer symbolic expressions from data. A popular approach for SR is the Sparse Identification of Nonlinea…

math.NA2022★ 5 cited

On single distribution lattice Boltzmann schemes for the approximation of Navier Stokes equations

François Dubois, Pierre Lallemand

In this contribution we study the formal ability of a multi-resolution-times lattice Boltzmann scheme to approximate isothermal and thermal compressible Navier Stokes equations wit…

math.NA2019★ 4 cited

Generalized bounce back boundary condition for the nine velocities two-dimensional lattice Boltzmann scheme

François Dubois, Pierre Lallemand, Mohamed Mahdi Tekitek

In a previous work, we have proposed a method for the analysis of the bounce back boundary condition with the Taylor expansion method in the linear case. In this work two new schem…

math.NA2019★ 21 cited

Nonlinear fourth order Taylor expansion of lattice Boltzmann schemes

François Dubois

We propose a formal expansion of multiple relaxation times lattice Boltzmann schemes in terms of a single infinitesimal numerical variable. The result is a system of partial differ…

math.NA2018★ 1 cited

Analysis of parametric models - linear methods and approximations

Hermann G. Matthies, Roger Ohayon

Parametric models in vector spaces are shown to possess an associated linear map. This linear operator leads directly to reproducing kernel Hilbert spaces and affine- / linear- rep…

math.NA2018★ 123 cited

Equivalent partial differential equations of a lattice Boltzmann scheme

François Dubois

We show that when we formulate the lattice Boltzmann equation with a small time step t and an associated space scale x, a Taylor expansion joined with the so-called equivalen…

math.NA2018

Analysis of parametric models for coupled systems

Hermann G. Matthies, Roger Ohayon

In many instances one has to deal with parametric models. Such models in vector spaces are connected to a linear map. The reproducing kernel Hilbert space and affine- / linear- rep…

math.NA2018★ 4 cited

Recovering the full Navier Stokes equations with lattice Boltzmann schemes

François Dubois, Benjamin Graille, Pierre Lallemand

We consider multi relaxation times lattice Boltzmann scheme with two particle distributions for the thermal Navier Stokes equations formulated with conservation of mass and momentu…

math.NA2017

Raviart Thomas Petrov-Galerkin Finite Elements

François Dubois, Isabelle Greff, Charles Pierre

The general theory of Babuška ensures necessary and sufficient conditions for a mixed problem in classical or Petrov-Galerkin form to be well posed in the sense of Hadamard. Moreov…

math.NA2014★ 29 cited

Kron's method and cell complexes for magnetomotive and electromotive forces

Olivier Maurice, Alain Reineix, Philippe Durand +1

Starting from topological principles we first recall the elementary ones giving Kirchhoff's laws for current conservation. Using in a second step the properties of spaning tree, we…

math.NA2014★ 32 cited

On a superconvergent lattice Boltzmann boundary scheme

François Dubois, Pierre Lallemand, Mohamed Mahdi Tekitek

In a seminal paper Ginzburg and Adler analyzed the bounce-back boundary conditions for the lattice Boltzmann scheme and showed that it could be made exact to second order for the P…

math.NA2014★ 2 cited

On triangular lattice Boltzmann schemes for scalar problems

François Dubois, Pierre Lallemand

We propose to extend the d'Humiéres version of the lattice Boltzmann scheme to triangular meshes. We use Bravais lattices or more general lattices with the property that the degree…

math.NA2014★ 8 cited

Comparison of Simulations of Convective Flows

Pierre Lallemand, François Dubois

We show that a single particle distribution for the D2Q13 lattice Boltzmann scheme can simulate coupled effects involving advection and diffusion of velocity and temperature. We co…

math.NA2011★ 10 cited

Unconditionnally stable scheme for Riccati equation

François Dubois, Abdelkader Saïdi

We present a numerical scheme for the resolution of matrix Riccati equation used in control problems. The scheme is unconditionnally stable and the solution is definite positive at…

math.NA2010★ 17 cited

Stable lattice Boltzmann schemes with a dual entropy approach for monodimensional nonlinear waves

François Dubois

We follow the mathematical framework proposed by Bouchut and present in this contribution a dual entropy approach for determining equilibrium states of a lattice Boltzmann scheme.…

math.NA2010★ 45 cited

Quartic Parameters for Acoustic Applications of Lattice Boltzmann Scheme

François Dubois, Pierre Lallemand

Using the Taylor expansion method, we show that it is possible to improve the lattice Boltzmann method for acoustic applications. We derive a formal expansion of the eigenvalues of…

math.NA2008★ 50 cited

Towards higher order lattice Boltzmann schemes

François Dubois, Pierre Lallemand

In this contribution we extend the Taylor expansion method proposed previously by one of us and establish equivalent partial differential equations of DDH lattice Boltzmann scheme…