Accéder directement au contenu Accéder directement à la navigation
Communication dans un congrès

Parallel Processing of Three-Dimensional Field-Scale Reactive Transport Applications

Abstract : In order to achieve field-scale reactive transport simulations in a reasonable CPU time, a parallel computational model is developed for RTAFF a fully three dimensional reactive transport simulator. The MPICH portable implementation of the message passing interface standard is used for communication among nodes in a Beowulf cluster of PC's. Parallel computations are carried out in different subdomains mapped to each processor in the Local Area Network during the advection and dispersion steps of the time-split procedure. The domain decomposition method is implemented using row-wise and column-wise overlapping subdomains simultaneously for the mixed hybrid finite element kernel. Computations of the reaction step are performed using a newly developed load balancing algorithm. This algorithm maps cells into processors based on global convergence history analysis from the previous time step. The efficiency of this approach is applied on a demonstrative field scale example showing that the load balancing algorithm efficiently localizes and redistributes reaction fronts cells among the processors. Furthermore, this application shows the scalability of the overall parallel algorithm and the achievement of several-orders-of-magnitude speedup among a range of processors. Modeling results provide new insights into detailed subsurface reactive-transport processes which could be taken simultaneously by scientists and engineers in either research or field-scale applications.
Type de document :
Communication dans un congrès
Liste complète des métadonnées

Littérature citée [12 références]  Voir  Masquer  Télécharger

https://hal-brgm.archives-ouvertes.fr/hal-00589865
Contributeur : Adil Sbai <>
Soumis le : lundi 2 mai 2011 - 15:39:17
Dernière modification le : jeudi 9 avril 2015 - 15:15:21
Archivage à long terme le : : mercredi 3 août 2011 - 02:45:55

Fichier

sbai-cmwr06.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-00589865, version 1

Collections

Citation

Mohammed Adil Sbai. Parallel Processing of Three-Dimensional Field-Scale Reactive Transport Applications. XVI International Conference on Computational Methods in Water Resources (CMWR XVI), Jun 2006, Copenhagen, Denmark. http://proceedings.cmwr-xvi.org/contributionDisplay.py?contribId=296&sessionId=12&confId=a051. ⟨hal-00589865⟩

Partager

Métriques

Consultations de la notice

213

Téléchargements de fichiers

77