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A Multiscale Approach for Thin-Film Slug Flow
KTH, School of Engineering Sciences (SCI), Physics, Nuclear Power Safety.ORCID iD: 0000-0002-0683-9136
2009 (English)In: Proceedings of the 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, ExHFT-7, 2009Conference paper (Refereed)
Abstract [en]

A multiscale modeling approach is presented for multiphase flow phenomena featuring a thin-film bounding two phases. A Micro Scale Solver predicts the thin film dynamics, influenced by an antagonistic Van der Waals force and a stabilizing repulsive force, which is mapped onto a Macro Scale Solver through a multiscale coupling. Numerical experiments of thin-film slug flow in a micropipe demonstrate that the key to capture multiscale phenomena lies in the accurate modelling of the microscale parameters. Faitful results are obtained with the multiscale treatment for the modelling of slug flow with a 10.4 nm thin-film, where pure computational multi-fluid dynamics is deficient. 

Place, publisher, year, edition, pages
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Energy Engineering
URN: urn:nbn:se:kth:diva-53650ISBN: 978-83-7464-235-4OAI: diva2:470538
ExHFT-7 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics. June 28 - July 03, Krakow 2009
QC 20120110Available from: 2011-12-29 Created: 2011-12-29 Last updated: 2012-01-10Bibliographically approved

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