LBM- Lattice Boltzmann numerical modeling and experimental study of bubble dynamics
The project at a glance
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Start date:01 Jan 2021
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Duration in months:84
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Funding:FNR, Rotarex S.A
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Principal Investigator(s):Stephan LEYER
About
The study of bubble dynamics is a fundamental scientific endeavor and serves as a core mechanism in phase-change heat transfer processes. This project aims to advance the understanding of bubble dynamics through a combination of numerical simulations and experimental validation. Using the Lattice Boltzmann Method (LBM), we simulate the complex interactions governing nucleation, growth, and departing from the surface of bubbles in multiphase systems as well as the effects of adjacent nucleation sites, which are especially important in nucleate pool boiling. The simulations focus on accurately capturing interfacial behaviour, phase transitions, and momentum transfer at mesoscopic scales, as also they aim to study various boiling characteristics such as nucleation site spacing, bubble departure diameter and wall heat-flux levels. Nucleation site arrangements are also being investigated including double, triple and quadruple formations. The experimental component, utilizing high-speed cameras and image recognition techniques, provides validation and insight into key phenomena, enabling the development of predictive models for applications such as boiling heat transfer, microfluidics and biomedicine. The findings contribute to a more accurate prediction of phase-change processes, with potential applications in energy systems, microfluidics, and industrial cooling technologies.
Organisation and Partners
- University of Luxembourg, China Scholarship Council, Paul Scherrer Institute (PSI)
Project team
Prof Stephan LEYER
Full professor in Mechanical engineering – Heat and mass transfer and thermodynamics
