Direct 3-d measurement of the flow velocity in porous media using magnetic resonance tomography
Direct 3-d measurement of the flow velocity in porous media using magnetic resonance tomography
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DOI：
10.1021/es991124i
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发表时间：
2000-10-01
影响因子：
11.4
通讯作者：
Niessner, R
中科院分区：
文献类型：
--
作者：
Baumann, T;Petsch, R;Niessner, R
The pore space of a sediment column (diameter 70 cm, length 20 cm), filled with natural sediments, was imaged with magnetic resonance tomography (MRT) at a spatial resolution of 0.5 x 0.5 x 0.5 mm(3). Apart from the evaluation of the resulting images, the statistical evaluation provides additional data to assess the pore size distribution. While the porosity of pores >0.2 mm can be measured directly, for smaller pores a calibration is necessary. Flow and diffusion processes were measured at a spatial resolution of 1.32 x 1.32 x 5 mm(3). The time between two measurements of a cross-sectional area is
