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    National Tsing Hua University Institutional Repository > 原子科學院  > 工程與系統科學系 > 期刊論文 >  Radionuclide transport in fractured porous media-analytical solutions for a system of parallel fractures with a kinetic solubility-limited dissolution model


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/47304


    Title: Radionuclide transport in fractured porous media-analytical solutions for a system of parallel fractures with a kinetic solubility-limited dissolution model
    Authors: Shih-Hai Li;Chu-Tien Chen
    教師: 李四海
    Date: 1997
    Publisher: American Nuclear Society
    Relation: NUCLEAR TECHNOLOGY, American Nuclear Society, Volume 120, Issue 2, NOV 1997, Pages 136-148
    Keywords: dissolving
    adsorption
    fracture
    Laplace transforms
    porous materials
    radioactive waste disposal
    radioisotopes
    rocks
    solubility
    Abstract: Analytical solutions are developed for the problem of radionuclide transport in a system of parallel fractures situated in a porous rock matrix. A kinetic solubility-limited dissolution model is used as the inlet boundary condition. The solutions consider the following processes: (a) advective transport in the fractures, (b) mechanical dispersion and molecular diffusion along the fractures, (c) molecular diffusion from a fracture to the porous matrix (d) molecular diffusion within the porous matrix in the direction perpendicular to the fracture axis, (e) adsorption onto the fracture wall, (f) adsorption within the porous matrix, and (g) radioactive decay. The solutions are based on the Laplace transform method. The general transient solution is in the form of a double integral that is evaluated using composite Gauss-Legendre quadrature. A simpler transient solution that is in the form of a single integral is also presented for the case that assumes negligible longitudinal dispersion along the fractures. The steady-state solutions are also provided. A number of examples are given to illustrate the effects of the following important parameters: (a) fracture spacings, (b) dissolution-rate constants, (c) fracture dispersion coefficient, (d) matrix retardation factor and (e) fracture retardation factor
    URI: http://cat.inist.fr/?aModele=afficheN&cpsidt=2856783
    http://www.ans.org/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/47304
    Appears in Collections:[工程與系統科學系] 期刊論文

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