Thermodynamics of partially Miscible Flows: a CFD Appraoch K

Ali Ghaemi, Natalie Germann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Physical models and numerical analysis on the fluid mechanics and mass transfer characteristics of multiphase flows are of practical relevance for optimizing the purification and separation processes in biotechnology and chemical engineering. Based on the generalized bracket approach of nonequilibrium thermodynamics, we propose a phase-field model to describe binary systems with different degrees of miscibility. We validate our numerical strategy by solving the rising bubble problem and comparing our results with benchmark data from the literature. Further, we successfully validate the implementation of our new phase-field model under real flow conditions, i.e., with experimental observations made inside a Y-shaped microchannel. We accurately predict the position of the interface and reproduce the mixing behavior of miscible and partially miscible components. Our new solver can address the application-specific optimization problems that are of ten encountered in designing novel microfluidic devices.

Original languageEnglish
Title of host publicationInternational Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2020
EditorsT.E. Simos, T.E. Simos, T.E. Simos, T.E. Simos, Ch. Tsitouras
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735441828
DOIs
StatePublished - 6 Apr 2022
EventInternational Conference on Numerical Analysis and Applied Mathematics 2020, ICNAAM 2020 - Rhodes, Greece
Duration: 17 Sep 202023 Sep 2020

Publication series

NameAIP Conference Proceedings
Volume2425
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Numerical Analysis and Applied Mathematics 2020, ICNAAM 2020
Country/TerritoryGreece
CityRhodes
Period17/09/2023/09/20

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