| A Numerical Study on Flow and Transport in a Rough Fracture with Self-affine Fractal Variable Apertures |
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학술지명 Talyor & Francis Group
저자 정우창,송재우
발표일 2008-01-31
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This paper presents the numerical study to examine the characteristics offluid flow and solute transport in a rough fracture subject to effective normal stresses.The aperture distribution is generated by using the self-affine fractal model. In orderto represent a nonlinear relationship between the supported normal stress and thefracture aperture, we combine a simple mechanical model with the local flow model.The solute transport is simulated using the random walk particle following algorithm.Results of numerical simulations show that the flow is significantly affected by thegeometry of aperture distribution varying with the effective normal stress level, while itis slightly affected by the fractal dimension that determines the degree of the fracturesurface roughness. However, solute transport is influenced by the effective normalstress as well as the fracture surface roughness. |