Multiphysics modelling of surface-subsurface water systems

Novel engineering problems and development of new technologies involve diverse physical processes and phenomena, known as Multiphysics. In this project, surface-subsurface flow and transport processes are chosen as representative examples of Multiphysics in water complex systems. Surface-subsurface processes usually require large-scale 3-D parallel numerical simulations and highly parallelizable computer codes, including adaptive multiresolution methods in space and time. A particular problem is finding appropriate coupling strategy between domains with different physics phenomena as well as verification of large-scale Multiphysics algorithms. The main objective of this project is to develop novel parallel Multiphysics coupling algorithms based on Fup basis functions and control volume methods for solving of complex Multiphysics water problems. Particularly, we will use common control volume formulation based on open code PFLOTRAN and novel adaptive Fup multiresolution control volume isogeometric analysis (CV-IGA) developed by our numerical group. The developed methods and new algorithms will be implemented into the parallel open sources codes: (1) generic parallel library PETSc and (2) PFLOTRAN unstructured finite volume code for surface-subsurface interactions. Particular project contribution is verification of developed algorithms using controlled laboratory experiments in new Hydrolab in University of Split. Application of new algorithms in PETSc and PFLOTRAN can be relevant for environmental and ecological modeling analyzing impact of different aspects on eco-system, water-quality, pollution transport, saltwater intrusion in coastal regions, climate modeling or hydro-power energy. Project results and developed algorithms will be served as platform for further application to different Multiphysics problems, EU projects and other related funds including business sector.