Details

Autor(en) / Beteiligte

• Berg, Steffen
• Ott, Holger
• Klapp, Stephan A.
• Schwing, Alex
• Neiteler, Rob
• Brussee, Niels
• Makurat, Axel
• Leu, Leon
• Enzmann, Frieder
• Schwarz, Jens-Oliver
• Kersten, Michael
• Irvine, Sarah
• Stampanoni, Marco

Titel

Real-time 3D imaging of Haines jumps in porous media flow

Ist Teil von

• Proceedings of the National Academy of Sciences - PNAS, 2013-03, Vol.110 (10), p.3755-3759

Ort / Verlag

Washington, DC: National Academy of Sciences

Erscheinungsjahr

2013

Quelle

EZB Free E-Journals

Beschreibungen/Notizen

• Newly developed high-speed, synchrotron-based X-ray computed microtomography enabled us to directly image pore-scale displacement events in porous rock in real time. Common approaches to modeling macroscopic fluid behavior are phenomenological, have many shortcomings, and lack consistent links to elementary porescale displacement processes, such as Haines jumps and snap-off. Unlike the common singular pore jump paradigm based on observations of restricted artificial capillaries, we found that Haines jumps typically cascade through 10-20 geometrically defined pores per event accounting for 64% of the energy dissipation. Real-time imaging provided a more detailed fundamental understanding of the elementary processes in porous media, such as hysteresis, snapoff, and ç on wetting phase entrapment, and it opens the way for a rigorous process for upscaling based on thermodynamic models.