標題: Application of 2-D random generators to the study of solute transport in fractures
作者: Su, HC
Kinzelbach, W
土木工程學系
Department of Civil Engineering
關鍵字: fractured porous media;fractional Brownian motion;Hurst exponent;cubic law
公開日期: 1-May-2001
摘要: Two fields with random aperture distribution and different spatial structures are taken as models to study solute transport in fractures. One network has non-vaunishing long range correlations and represents a fractal pattern. The other one has a finite correlation length and an exponential covariance function. Based on these fields, two physical fracture models were produced and used to record the movement of a coloured solute by means of a CCD camera. The pictures obtained were analyzed with image processing methods. A front tracking algorithm shows that the growth law of the frontal variance is a power law of time with the exponent depending on the Hut-st coefficient of the aperture distribution in the case of the fractal pattern, while it is a linear function of time for the case of the finite correlation length.
URI: http://hdl.handle.net/11536/29675
ISSN: 0253-3839
期刊: JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
Volume: 24
Issue: 3
起始頁: 397
結束頁: 403
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