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Extending the capability of TOUGHREACT simulator using parallel computingPowerPoint Presentation

Extending the capability of TOUGHREACT simulator using parallel computing

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### Extending the capability of TOUGHREACT simulator using parallel computing

Application to environmental problems

What is TOUGHREACT ? parallel computing

Coupled Process in porous media simulator,

developed in Lawrence Berkley Lab.

Multi-phase flow

+

Solute transport

+

Geochemical reaction

Motivation of the work parallel computing

- Lab code constraints:
- Developed for testing the model
- Running on workstation or laptop
- Numerical model can not scaling ( 8000 discrete grids limited)
- Engineering requirements:
- Carrying the simulation of site-scale model involved complex processes
- Improve the speed in numerical solving .

Method parallel computing

- Redevelop the software package using parallel computing schema.
- Domain Decomposition.
- Communication between divided subdomains(MPI)

Public Module parallel computing

Module organizationIO

Simulation procedure

Flow

Geochemical

Transport

Domain Decomposition

Subdomain Communication

EOS-MODULE

State

Update

Parallel Matrices Assemble

Index Transform-ation

Parallel Linear solving

Application: parallel computingCarbon dioxide sequestration

Fine grid model: parallel computing

Total : 37824 grids

Runtime Statistics parallel computing

What we’ve parallel computinggained from work

- A new software package running on parallel computing facility ( Cluster …)
- Speed up ( 20 X – 40 X in test case )
- Simulation model scaling up ( 100,000 grids have been tested)

Thanks for your attention ! parallel computing

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