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Interface enhancement with textured surfaces in thin-film flows

Muthukumar, K. V. ORCID iD icon 1; Ates, C. ORCID iD icon 1; Okraschevski, M. ORCID iD icon 1; Bürkle, N. ORCID iD icon 1; Aguirre Bermudez, D. M. ORCID iD icon 1; Haber, M. ORCID iD icon 1; Koch, R. 1; Bauer, H.-J. 1; Düll, A. 2; Öhl, F. 2; Häber, T. ORCID iD icon 2; Deutschmann, O. ORCID iD icon 2
1 Institut für Thermische Strömungsmaschinen (ITS), Karlsruher Institut für Technologie (KIT)
2 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

The interfacial area between the fluid and gas phases plays a significant role in the diffusion and mass transfer-controlled processes. For reactive transport, as in the CO2 absorption in thin-film flows, the time scale of the reaction can be much faster than the time scale of the mass transfer. We, therefore, moot that the absorption rates per volume reactor can be increased if the surface renewal at the interface is enhanced via textured surfaces over which the liquid film flows. The realization of this uncharted potential, however, requires a precise understanding of the complex dynamics between the transient film thicknesses, velocity distributions, and modified surfaces. Hence, we need an accurate and sharp representation of the very thin gas-liquid interface and the ability to capture discontinuities, local penetrations, and the mixing of phases at high temporal and spatial resolutions. In this work, to the best of our knowledge, we investigated for the first time how different surface textures influence the film hydrodynamics and how it is reflected onto the interfacial area statistics at steady conditions using Smoothed Particle Hydrodynamics (SPH). ... mehr


Postprint §
DOI: 10.5445/IR/1000164183
Veröffentlicht am 28.11.2023
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Technische Chemie und Polymerchemie (ITCP)
Institut für Thermische Strömungsmaschinen (ITS)
Publikationstyp Proceedingsbeitrag
Publikationsjahr 2023
Sprache Englisch
Identifikator KITopen-ID: 1000164183
Erschienen in 17th SPHERIC International Workshop
Veranstaltung 17th SPHERIC International Workshop (2023), Rhodos, Griechenland, 27.06.2023 – 29.06.2023
Schlagwörter Smoothed Particle Hydrodynamics, SPH, Falling film reactors, CO2 absorption, Structured surfaces
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