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Note: Reconstruction of fluid flows in porous media using geometric a prioi information

: Maisl, Michael; Scholl, Hagen; Schorr, Christian; Seemann, Ralf


Review of scientific instruments 87 (2016), Nr.12, Art. 126105, 3 S.
ISSN: 0034-6748
ISSN: 1089-7623
Deutsche Forschungsgemeinschaft DFG
836/1-1; IMCL
Fraunhofer IZFP ()
x-ray tomography; porous media

X-ray tomography typically suffers from insufficient temporal resolution when imaging dynamic processes. Using the example of multiphase flow in solid porous media, we adapt an iterative algorithm to compute 3d tomograms from 2d projections, which allows for a significant reduction of scan time while maintaining a high level of reconstruction quality. To this end, a priori knowledge about the porous medium is incorporated into the reconstruction algorithm. This algorithm is universal when monitoring dynamic changes in any static matrix and allows for an at least five times decreased imaging time with respect to standard reconstruction algorithms.