Large-scale Simulations in Complex Flows

SNIC 2021/1-14


SNIC Large Compute

Principal Investigator:

Luca Brandt


Kungliga Tekniska högskolan

Start Date:


End Date:


Primary Classification:

20306: Fluid Mechanics and Acoustics

Secondary Classification:

10105: Computational Mathematics



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 Prof. Brandt as PI and Profs. Lundell, Bagheri and Mihaescu, Assoc. Profs. Dahlkild , Duwig, Prahl Wittberg and Tammisola as Co-Invertigators, consists of a total of 40 senior researchers, Postdocs and PhD students, with at least 3 to be hired during the year. 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. Complex fluids: Simulations of non-Newtonian fluids and flows with a microstructure (particles, fibers, bubbles, droplets in laminar and turbulent regimes). 2. Flow at interfaces: Simulations of flows over porous, elastic, poro-elastic and micro-structured interfaces. 3. Bio-physical flows: Simulations of the flows within the cardiovascular and respiratory systems, and cell transport. 4. Multiphase and free-surface flows with phase change: multiphase flows that account for complex physical phenomena such as phase change, absorption/desorption, buoyancy-induced convection to study bubble/droplet spreading, breakup during evaporation and boiling process. 5. Unsteady flows for clean vehicles: Simulations of compressible flows, with heat- and mass-transfer associated with energy conversion and propulsion systems, to reduce pollutants and noise and improve efficiency.