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Imaging of Water Flow in Porous Media by Magnetic Resonance Imaging Microscopy

^a Environment and Risk Management Group, Hort Research Institute, Private Bag 11-030, Palmerston North, New Zealand
^b Institute of Fundamental Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand

View larger version (21K): [in a new window]   Fig. 1. Spatial distribution of velocities inside a capillary tube with a diameter of 2.3 mm. The mean velocities were (a) 0.6, (b) 6, and (c) 14 mm s-1.

View larger version (19K): [in a new window]   Fig. 2. Relationship between the actual applied flow rates and those measured by nuclear magnetic resonance (NMR).

View larger version (62K): [in a new window]   Fig. 3. Nuclear magnetic resonance (NMR) image of the volumetric water content from a 2-mm slice in the center of the column packed with glass beads.

View larger version (35K): [in a new window]   Fig. 4. Spatial distribution of velocities in the glass bead mean flow rates of (a) 0.5 and (b) 1 mm s-1.

View larger version (15K): [in a new window]   Fig. 5. Measured and predicted breakthrough curve (BTC) of chloride using the convection–dispersion equation (CDE) with theoretical parameter values (dotted line), and with fitted parameter values (solid line). Also shown is the prediction based on the velocity distribution measured by nuclear magnetic resonance (NMR) (broken line).