[PDF] Top 20 Numerical analysis of the neutron multigroup $SP_N$ equations

... time-consuming. The simplified P N (SP N ) transport theory [11] was developed to address this ...issue. The two fundamental hypothe- ses to obtain the SP N equations are that locally, ... Voir le document complet

... or the neutron diffusion. Among models that are used in the nuclear industry, the multigroup neutron diffusion equation plays a central role ...[15]. The base block is ... Voir le document complet

... electricity. The nuclear reactor core is a delimited area where a fission chain reaction ...a neutron collides a fissile nucleus there is a probability that a fission ...occurs. The fission emits new ... Voir le document complet

... FOR THE NEUTRON DIFFUSION EIGENPROBLEM WITH HETEROGENEOUS COEFFICIENTS ...first the convergence of the finite element approximation of the mixed diffusion equations ... Voir le document complet

... first the convergence of the finite element approximation of the mixed diffusion equations with a source term, in the case where the solution is of low ...in ... Voir le document complet

... In the case without jumps, numerical examples of implementations of this scheme may be found in [22] for ...whatever the method, the computation of a conditional ... Voir le document complet

... is the Dirac distribution. We emphasize that the initial electromagnetic field is set to zero and the absorbing boundary condition is approximated by means of an upwind ...place the ... Voir le document complet

... comprises the concrete cover to the steel ...fraction of the entire cross section of the reinforced concrete ...keep the problem size as well as the computational ... Voir le document complet

... stability of linear conservative systems when coupled with diffusive systems, ESAIM: Control, Optimisation and Calculus of Variations 11 (3) (2005) ...Identification of the dynamics of ... Voir le document complet

... Sixth, the flap is sutured at the flap apex (Fig. 1e). The fourth stitch, also called the corner stitch, is the most highly ...Finally, the whole flap is entirely sutured (Fig. ... Voir le document complet

... Science Arts & Métiers (SAM) is an open access repository that collects the work of Arts et Métiers Institute of Technology researchers and makes it freely available over the web where ... Voir le document complet

... 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

... 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

... In the strongly nonlinear or wave turbulent regime, an energy cascade from the injection to the disspative scale has been recently demonstrated theoretically [18], and then studied experimentally ... Voir le document complet

... all the schemes presented here are implicit, including the useful special case of α = β = 1, and will require the solution of linear systems, which form the largest part ... Voir le document complet

... flow-sensitive analysis. The key insight is that strong updates are applicable when the dereferenced points-to set is a singleton, and a singleton set is cheap to ...Hence the analysis ... Voir le document complet

... used. The obtained system is closed using an entropy minimization procedure leading to the so-called M 1 ...preserve the main features of the underlying kinetic model, and it mod- els ... Voir le document complet

... 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

... 1.0. Flight Simulator is an analog computer and as such it has mary eccentricities. For example, the solution obtained from the computer may not be the solution of[r] ... Voir le document complet

... estimate the potential of the new approach, the numerical simulation of turbulent ¯ows involving physical phenomena such as separation, reattachment or recirculation has been ... Voir le document complet