iCROSS Reactive Transport Modelling Workshop I:
Radionuclides Model-Chain

Background and Scope

The workshop is dealing with modelling radionuclides migration in the near field of a repository in clay rock. This activity is part of the iCROSS project (Integrity of nuclear waste repository systems - Cross-scale system understanding and analysis) funded by BMBF and Helmholtz Association of German Research Centers.

The workshop is based on the open source modelling platforms OpenGeoSys-6 (OGS) and PHREEQC v.3 and it is divided into two half-days:

Day 1: The first day includes a short introduction to reactive transport processes with focus on radionuclides migration. It will be explained the conceptual and numerical model used in the model chain. Set-up software prerequisites for using OGS, pre- and post-processing tools will be explained with simple transport examples.

Day 2: The second day is dedicated to more complex mechanistic models of the model chain. The OGS6-PHREEQC and the OGS-6-look-up table approach will be introduced. Finally the Model-Chain Jupyter Notebook will be explained.


Day 1: Tuesday, 07th of  December 2021
Video-Link (Zoom)

Time Topic
08:30-08:45 Welcome and Introduction
08:45-09:00 Radionuclide Model-Chain concept
09:00-09:30 Introduction to sorption / diffusion models
09:30-11:00 Installation, pre- and post-processing tools
11:00-11:30 Break
11:30-13:00 OGS-6 modeling (Diffusion)

Day 2: Wednesday, 08th of December 2021
Video-Link (Zoom)

Time Topic
08:30-10:00 Radionuclide migration with OGS6#iPHREEQC
10:00-10:30 Break
10:30-12:00 Look-up Tables (LT) and Jupyter Notebooks
12:00-12:30 Wrap-up and Follow-ups

Instructors: Jaime Garibay-Rodriguez, Vanessa Montoya, Renchao Lu, Haibing Shao, Olaf Kolditz

The workshop is also organized in conjunction with the ELF-China project funded by BMWi.