Large-scale Simulations in Complex Flows
Title: Large-scale Simulations in Complex Flows
SNIC Project: SNIC 2019/1-41
Project Type: SNIC Large Compute
Principal Investigator: Luca Brandt <>
Affiliation: Kungliga Tekniska högskolan
Duration: 2019-07-01 – 2020-07-01
Classification: 20306 10105


We present a large-level request for computer time on high-performance computing (HPC) resources within the Swedish National Infrastructure for Computing (SNIC). We summarize here the projects by the research group Micro Complex Flow, at the Linne FLOW Centre, (VR Excellence Centre) at KTH Mechanics. The group, with Pi's Prof. Brandt and Lundell, Assoc. Prof. Dahlkild, Lundell, Mihaescu, Duwig, Bagheri and Prahl Wittberg, Dr. Do-Quang and Tammisola, consists of a total of 8 senior researchers, 8 Postdocs and 23 PhD students, i.e. a total of 39 researchers. In the proposal we list 26 research projects that rely on HPC resources, grouped in five focal areas to enable a quick overview. Many researchers participate in and contribute to more than one area. 1. Suspension flows: Simulations of flows with rigid, elongated and deformable particles and droplets to study rheology, stability and turbulence. 2. Flow at interfaces: Simulations of flows over porous, elastic, poro-elastic and micro-structured interfaces 3. Bio-physical flows: Simulations of the fluid dynamics within the human cardiovascular and respiratory systems, and cell transport. 4. Multiphase and free-surface flows with phase change and capillarity:multiphase flow models that account for complex physical phenomena such as phase change, capillary forces, buoyancy-induced convection to study bubble/droplet spreading, breakup with evaporation, gasification and boiling process, etc. 5. Unsteady flows for clean vehicles: Simulations of compressible flows, with heat- and mass-transfer associated with internal combustion engines and gas turbines, to reduce pollutants, improve efficiency and reduce noise.