Kemakta has wide experience and expertise in modelling repository environments and the geosphere. Particular focal areas for us include assessing physico-chemical changes in nuclear waste
repositories over time and the migration of radionuclides. Since low water flow is a safety function of a repository, waterborne transport of dissolved substances within a repository often occurs over very long timescales. Modelling therefore plays a key role in performance and safety assessment.
Our work often considers the interplay between flow processes (hydrology/hydrogeology), diffusion and chemical reactions (geochemistry). Many different tools and techniques are used to study and characterize these processes, and some of the specialized tools we use are Comsol Multiphysics, Matlab, ConnectFlow, PHREEQC, Phast, CrunchFlow, and ToughReact.
Examples of our modelling projects are described under the following links. They have been selected to give an overview of both the breadth and depth of our work, as well as to demonstrate how we apply combinations of modelling tools to obtain a detailed understanding of processes:
- Hydrological, geochemical and reactive transport modelling
- Barrier degradation and other repostiory level processess
- Radionuclide transport