Title:	Detailed simulations of turbulent bubbly flows
DNr:	SNIC 2021/5-326
Project Type:	SNIC Medium Compute
Principal Investigator:	Gaetano Sardina <sardina@chalmers.se>
Affiliation:	Chalmers tekniska högskola
Duration:	2021-07-01 – 2022-07-01
Classification:	20306 10105
Homepage:	https://research.chalmers.se/en/project/8109
Keywords:

Abstract

The computational time will be used for the activities within the project “Understanding and modeling bubble-induced turbulence” funded by VR, the Swedish Research Council. The aim of this project is to forge a physical understanding of the complex flows and transport phenomena occurring in bubbly flows to then develop new turbulence models. Bubbly flows play a significant role in a wide range of industrial and geophysical processes: oil transport, chemical reactors, nuclear reactors, heat exchangers, atmosphere-ocean exchanges. Bubble columns offer numerous advantages in industrial applications such as good heat and mass transfer characteristics, absence of moving parts, low operating and maintenance cost. The current design of these devices is still based on global empirical correlations. Predicting the motion of bubbles and how the continuous phase is affected by the dispersed phase are still key problems in fluid mechanics even without phase transitions and boiling. We will employ large-scale simulations to investigate bubbly flows at different scales. HPC resources are needed to resolve the bubble in the computational grid. The open-source code Basilisk will be used in the first phase. We will perform Eulerian-Lagrangian and Eulerian-Eulerian simulations using the an in-house code developed by the Principal Investigator.