Summary
Contaminant transport in fractured porous formations is often simulated with dual-porosity models. In such models the heterogeneous formation is separated into two coupled continua, one representing the fractures, one representing the rock matrix. The main objective of the present study is to investigate the effect of spatial variations of matrix block properties (especially such as size and shape) and to determine effective continuum parameters for the matrix continuum. Numerical simulations are performed with a newly developed code applying a Lagrangian-Eulerian algorithm for the transport simulation in stochastically generated discrete fracture systems combined with a sophisticated Finite Element formulation to account for molecular diffusion in matrix blocks of arbitrary size, shape and material properties. To check the accuracy of the continuum approach, breakthrough curves are compared of two different sets of simulation runs, one considering the exact matrix properties, the second using different averaged effective continuum parameters.
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© 1997 Friedr. Vieweg & Sohn Verlagsgesellschaft mbH, Braunschweig/Wiesbaden
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Jansen, D., Birkhölzer, J., Köngeter, J. (1997). Dual-Porosity Modelling of Contaminant Transport in Fractured Porous Formations: the Effect of Spatial Variations of Matrix Block Properties. In: Helmig, R., Jäger, W., Kinzelbach, W., Knabner, P., Wittum, G. (eds) Modeling and Computation in Environmental Sciences. Notes on Numerical Fluid Mechanics (NNFM), vol 59. Vieweg+Teubner Verlag. https://doi.org/10.1007/978-3-322-89565-3_19
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DOI: https://doi.org/10.1007/978-3-322-89565-3_19
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