[PDF] Top 20 A nominally second-order cell-centered Lagrangian scheme for simulating elastic-plastic flows on two-dimensional unstructured grids

... describe a cell-centered Lagrangian scheme devoted to the numeri- cal simulation of solid dynamics on two-dimensional unstructured grids in planar ... Voir le document complet

... conditions for all the domain boundaries except the left one which is enforced to be a wall ...is a good test to assess the robustness of our numerical method, while keeping in mind that the ... Voir le document complet

... methods, unstructured grids, anisotropic diffusion, parallel ...describe a finite volume scheme to solve anisotropic diffusion equations on unstructured ...three-dimensional ... Voir le document complet

... proposed scheme is designed on general meshes for heterogeneous and anisotropic permeability tensors with the following advantages: • The main idea of the scheme is based on that of the standard ... Voir le document complet

... tions. For the discretization of this system, we focus on a DG method which is a finite element method allowing discontinuities at the interfaces treated by nu- merical fluxes as for finite ... Voir le document complet

... VP flows, which are al- ways fore-aft symmetric [30]. VE flows represent a mixed situation, where the negative wake has already been evi- denced, both experimentally [45] and numerically ...occurs ... Voir le document complet

... Unite´ de recherche INRIA Lorraine, Technopoˆle de Nancy-Brabois, Campus scientifique, 615 rue du Jardin Botanique, BP 101, 54600 VILLERS LE` S NANCY Unite´ de recherche INRIA Rennes, Ir[r] ... Voir le document complet

... Unité de recherche INRIA Sophia Antipolis 2004, route des Lucioles - BP 93 - 06902 Sophia Antipolis Cedex France Unité de recherche INRIA Lorraine : LORIA, Technopôle de Nancy-Brabois - [r] ... Voir le document complet

... numerical scheme for 2D homogeneous models for two-phase ...numerical scheme is able to compute accurate approximate solutions with an under-resolved discretization, ...i.e. a ... Voir le document complet

... same for the three parts), so a reference solution of this problem can easily be computed with a standard Eulerian ...code. For these initial data, the solution at the final time t = 0.4 ... Voir le document complet

... [1], a signed distance to the obstacle d is used to represent solid boundaries in the computational ...cartesian cell either filled by the fluid or cut by the solid boundaries (see Figure ...Unlike ... Voir le document complet

... as a solid when the stress is below the yield stress and flows like a fluid ...both for theoretical and numerical studies of viscoplastic flows relies on the non-differentiable ... Voir le document complet

... in elastic-plastic media In this section, the governing equations of general dynamic problems in elastic-plastic solids are first written with a tensorial formalism based on the ... Voir le document complet

... numerical scheme proposed in this paper is a new cut-cell ...classical centered, second-order finite volume schemes are ...cells for both fluid-cells and ...obstacle, ... Voir le document complet

... and a phase 1 pressure defined by u 1 ini (x) = u 2 ini ...VAG scheme is based on a flux formulation with up- winding of the mobilities rather than the discrete variational formulation (2) in ... Voir le document complet

... and two-phase flow ...are two strategies for dealing with the LBB condition: (i) satisfying it by choosing an appropriate velocity-pressure element pair, where interpolants of one order lower ... Voir le document complet

... preferred for numerical simulations. Two main approaches are found: one is the colocated approach which is usually based on some approximate Riemann solver, see ...on a staggered arrangement of the ... Voir le document complet

... A coupled Eulerian/Lagrangian method is presented for the reduction of numerical diffusion observed in solutions of three-dimensional rotational flows using standard Eu- [r] ... Voir le document complet

... hybrid dimensional Darcy flow model with continuous pressures has been the object of several ...[24] a cell-centred Finite Volume scheme using a Two Point Flux Ap- proximation ... Voir le document complet

... and cell temperature using a local variational ...surrounding a node can be eliminated by solving a small linear system which is obtained by enforcing the continuity condition of the normal ... Voir le document complet