Experimenting with the p4est library for AMR simulations of two-phase flows

Florence Drui; Alexandru Fikl; Pierre Kestener; Samuel Kokh; Adam Larat; Vincent Le Chenadec; Marc Massot

doi:10.1051/proc/201653014

All issues

Volume 53 (March 2016)

ESAIM: Proc., 53 (2016) 232-247

Abstract

Open Access

Issue		ESAIM: Proc. Volume 53, March 2016 CEMRACS 2014 – Numerical Modeling of Plasmas


Page(s)		232 - 247
DOI		https://doi.org/10.1051/proc/201653014
Published online		01 April 2016

ESAIM: PROCEEDINGS AND SURVEYS, March 2016, Vol. 53, p. 232-247

Experimenting with the `p4est` library for AMR simulations of two-phase flows

Florence Drui¹^,2, Alexandru Fikl², Pierre Kestener², Samuel Kokh²^,3, Adam Larat¹^,4, Vincent Le Chenadec¹ and Marc Massot¹^,4

¹ Laboratoire EM2C, CNRS UPR 288 et cole Centrale Paris, Grande Voie des Vignes, 92295 Chtenay-Malabry Cdex
² Maison de la Simulation, CNRS USR 1441, Bat. 565 - Digito, CEA Saclay, 91191 Gif-sur-Yvette
³ CEA/DEN/DANS/DM2S/STMF, CEA Saclay, 91191 Gif-sur-Yvette
⁴ Fdration de Mathmatiques de l’cole Centrale Paris, CNRS FR 3487, Grande Voie des Vignes, 92295 Chtenay-Malabry Cdex

Abstract

Many physical problems involve spatial and temporal inhomogeneities that require a very fine discretization in order to be accurately simulated. Using an adaptive mesh, a high level of resolution is used in the appropriate areas while keeping a coarse mesh elsewhere. This idea allows to save time and computations, but represents a challenge for distributed-memory environments. The MARS project (for Multiphase Adaptative Refinement Solver) intends to assess the parallel library p4est for adaptive mesh, in a case of a finite volume scheme applied to two-phase flows. Besides testing the library’s performances, particularly for load balancing, its user-friendliness in use and implementation are also exhibited here. First promising 3D simulations are even presented.

Résumé

De nombreux problmes physiques mettent en jeu des inhomognits spatiales et temporelles, qui pour tre simules correctement requièrent une discrtisation très fine. Utiliser un maillage adaptatif pour obtenir ce niveau de rsolution dans les zones o elle est requise, et garder un maillage grossier en-dehors, permet d’intressantes conomies en temps et ressources de calcul, mais représente un défi pour le calcul distribué. Le projet MARS (Multiphase Adaptative Refinement Solver) a pour objectif d’évaluer la librairie parallèle de maillage adaptatif p4est, appliqueun schma de volumes finis pour un modèle bifluide d’écoulement diphasique. Outre les performances de cette librairie, en particulier en terme d’équilibrage de charge, sa facilit d’utilisation et d’implmentation sont mises en avant. Des premires simulations 3D prometteuses sont prsentes.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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