[PDF] Top 20 An asymptotic preserving scheme for Hydrodynamics Radiative Transfert Models

... L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignemen[r] ... Voir le document complet

... AGE-STRUCTURED MODELS ARISING IN ADAPTIVE DYNAMICS ∗ LUIS ALMEIDA † , BENOIT PERTHAME † , AND XINRAN RUAN † ...propose an asymptotic preserving (A-P) scheme for a population ... Voir le document complet

... multi-scale scheme whose stability and convergence are independent of ε refers to the asymptotic preserving (AP) ...the models behave like hyperbolic equations with source ...with an ... Voir le document complet

... Godunov-type asymptotic preserving schemes for the Friedrichs systems on unstructured ...using an asymptotic preserving scheme for the "diffusive" part ... Voir le document complet

... ] for theoretical aspects and [ 1 , 4 , 17 , 20 ] for some numerical studies) and appears in several physical problems as, for instance, in non-newtonian fluids [ 9 ...a scheme for ( ... Voir le document complet

... moments models represent an alternative method situated between kinetic and fluid ...equations for flows close to equilibrium but may suffer from closure breakdown and lead to unrealisable ... Voir le document complet

... entropy for hyperbolic systems of conservation laws was introduced in the pioneer works of DiPerna [ 10 ] and Dafermos [ 8 ...kinetic models to their hydrodynamic limit [ 14 , 33 ...result for ... Voir le document complet

... the asymptotic state is constant, the upwind scheme will be perfectly adapted, whereas for a non-constant asymptotic state, with a large second derivative, a new scheme has to be ... Voir le document complet

... Angle for different pressure ratios calculated with Euler and BGK ...of Asymptotic Preserving schemes [14] has been introduced answering the need for numerical methods that automatically ... Voir le document complet

... these models is however not straightforward and brings many other technical difficulties related to the interfaces ...called asymptotic preserving approach introduced by Jin [ 16 , 17 ] so as to be ... Voir le document complet

... used for numerous applications in the context of strong magnetic fields ([13, 4]) for the gyro-fluid limit as well as in fluid mechanics for the hydrodynamic limit ([23, ...found for example ... Voir le document complet

... closure for the NDF proposed by Vie et ...particles for small to moderate Stokes number flows, given a LES model for the gaseous phase, and is representative of the generic difficulties of such ...to ... Voir le document complet

... moments models provide higher accuracy than fluid model because the veloc- ity modulus (denoted ζ in this work) is kept as a ...such models is performed only in angle (integration on the unit ...intermediate ... Voir le document complet

... diffusive asymptotic. Let us mention, for instance, neutron transport, radiative transfer in the “optically thick limit” (see [1, 31, 32, 38, 39] and the references therein) and semiconductor ... Voir le document complet

... moments models represent an alternative method situated between kinetic and fluid ...equations for flows close to equilibrium but may suffer from closure breakdown and lead to unrealisable ... Voir le document complet

... One of the main challenges for this objective is to control the wall-plasma inter- actions. Indeed, the magnetic confinement is not perfect and the plasma is in contact with the wall. In a tokamak such as TORE ... Voir le document complet

... The new conical schemes obtained by adding a control point located on each mid edge (shoulder point) are strictly different from those of the original polygonal case, especially for the planar degenerate conical ... Voir le document complet

... ε = 1. From the PIC point of view, our hybrid scheme can be seen as a δ f method (see [4] for example). We thus take the same advantages: the noise due to the prob- abilistic character of the particles ... Voir le document complet

... method for the BGK equation which enjoys the following properties: (i) its statistical noise is smaller than the one of standard Monte Carlo methods; (ii) it is asymptotically stable with respect to the Knudsen ... Voir le document complet

... (ABS for short) is a cryptographic primitive that enables users to sign data with fine-grained control over the required identifying information ...settings for ABS must include a Signature Trustee (ST ), ... Voir le document complet