Particle-laden flows
Particle-laden flows occur in many resource processes such as froth flotation, leaching, or grinding. We research such flows with advanced experimental and numerical tools to predict the particle behavior and optimize processes.
Investigation of powder mixing for fine particle recycling
The project FINEST processes different residues in an optimized manner to generate value and to minimize hazards.
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Particle resuspension in environmental flows
We aim to understand the micromechanical behavior of particle resuspension through experimental and numerical approaches.
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Fiber dynamics at a fluidic interface
We investigate the dynamic behavior of long elastic fibers interacting with bubbles or droplets
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Deposition and resuspension of nuclear aerosol particles in turbulent flows
The transport, deposition and resuspension behaviour of carbonaceous dust in the primary circuit of a High Temperature Reactors (HTR) is a fundamental safety issue for the development and safety assessment of such a reactor.
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Hydrodynamics of flotation
In the froth flotation process the valuable hydrophobic particles attach to the fluidic interface of rising bubbles while the undesired hydrophilic particles settle down to eventually be discharged. A better understanding with the help of a three-phase flow model to simulate the particle capture and appropriate microscale experiments using the in-house optical process microscope could help to make the capture of hydrophobic mineral particles more efficient.
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Investigation of binary granular mixing in a rotating drum
The mixing of two granular species is central to a variety of industrial processes. Notable examples include the mixing of dry granular products in the pharmaceutical, chemical and food processing industry using apparatuses such as mixing drums.
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Particle remobilization in urban systems
Aeroallergens, such as those derived from pollen grains, are known to trigger asthma epidemics. Outbreaks are highly seasonal and their frequency increases in summer. During prolonged urban heat wave, a significant portion of the pollen deposits on urban surfaces.
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Air cleaning technologies for pathogen inactivation and bioaerosols spread
Airborne transmission of pathogens became known to a wider public in the context of the COVID-19 pandemic. Recently required applications in hospitals as well as preparedness for future global threats demand the development of efficient air cleaning technologies for separating and inactivating pathogenic aerosol particles.
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Taylorbubbles
Wet scrubbing is a simple and effective solution to remove nano- and micro-pollutants from gas. As individual gas bubbles rise in small channels, the suspended micro-pollutants bind to the liquid and hence separate.
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