Third party funded individual grant
Acronym: waLBerla phase fied models
Start date : 01.09.2019
End date : 01.09.2020
Multicomponent flows are of considerable scientific interest due to their broad range of applications. Emulsions, for example, play an important role in processing of coatings, cosmetics, pharmaceutics, and foods. Especially double emulsions, where smaller drops are encapsulated in larger drops, carry high potential for medial applications like controlled drug delivery and release. On much larger scales, multicomponent flows are of wide interest in the oil industry where advanced recovery processes require a detailed understanding of the multicomponent system comprised of water, oil and several gaseous phases. To simulate complex multicomponent problems there exist two computational approaches to represent the interface. In sharp interface models the interface is resolved by a single computational cell. An algorithmically complex surface tracking approach must be used to ensure that a special free surface boundary can be applied. For this work the second approach, a diffuse interface phase-field model wll be investigated. In these methods the interface is resolved with multiple lattice cells allowing for a very flexible modeling of surface tensions effects. Computationally, their main advantage is that they require no explicit surface tracking step, such that their stencil-type nature makes them very well suited for HPC. In this project we will investigate which parts of the waLBerla HPC software framework can be generated in order to obtain optimal performance for concrete simulation runs.