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High Precision Synthetic Computed Tomography of Reconstructed Porous Media

R. Hilfer1,2 and Th. Zauner1,2
1Institute for Computional Physics, Universität Stuttgart, Pfaffenwaldring 27, 70569 Stuttgart, Germany
2Institut für Physik, Universität Mainz, 55099 Mainz, Germany

Multiscale simulation of transport in disordered and porous media requires microstructures covering several decades in length scale. X-ray and synchrotron computed tomography are presently unable to resolve more than one decade of geometric detail. Recent advances in pore scale modeling (Phys.Rev.E 80, (2009), 041301) provide strongly correlated microsctructures with several decades in microstructural detail. A carefully calibrated microstructure model for Fontainebleau sandstone has been discretized into a suite of three dimensional microstructures with resolutions from roughly 128 micrometer down to roughly 500 nanometer. At the highest resolution the three dimensional image consists of 327683 = 35 184 372 088 832 discrete cubic volume elements with gray values between 0 and 216. This synthetic image is the largest computed tomogram of a porous medium available at present.