Oral Presentation International Conference on Tomography of Materials & Structures

Refining Pink Beam Fast Microtomography to Study Time Resolved Multi-Phase Flow in 3D Porous Media (173)

Douglas E Meisenheimer 1 , Mark L Rivers 2 , Dorthe Wildenschild 1
  1. School of Chemical, Biological and Environmental Engineering, Oregon State University, Corvallis, OR, USA
  2. Department of Geophysical Sciences and Center for Advanced Radiation Sources, The University of Chicago, Chicago, IL, USA

Pink beam fast x-ray microtomography was optimized for two-phase flow experiments. The most ideal configuration utilizes a 1 mm copper filter and 1.5 mrad platinum mirror to filter out the low and high energy x-rays, respectively. This configuration, along with minimizing x-ray exposure when not scanning, limits bubble formation in the wetting phase while providing adequate image quality. A case study looking at the production of interfacial area in a transient and quasi-static two-phase flow experiment shows that transient flow produces more interfacial area.

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