Semi-analytical treatment of fracture/matrix flow in a dual-porosity simulator for unsaturated fractured rock masses

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A semi-analytical dual-porosity simulator for unsaturated flow in fractured rock masses has been developed. Fluid flow between the fracture network and the matrix blocks is described by analytical expressions that have been derived from approximate solutions to the imbibition equation. These expressions have been programmed into the unsaturated flow simulator, TOUGH, as a source/sink term. Flow processes are then simulated using only fracture elements in the computational grid. The modified code is used to simulate flow along single fractures, and infiltration into pervasively fractured formations.

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7 p.

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Zimmerman, R.W. & Bodvarsson, G.S. April 1, 1992.

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Description

A semi-analytical dual-porosity simulator for unsaturated flow in fractured rock masses has been developed. Fluid flow between the fracture network and the matrix blocks is described by analytical expressions that have been derived from approximate solutions to the imbibition equation. These expressions have been programmed into the unsaturated flow simulator, TOUGH, as a source/sink term. Flow processes are then simulated using only fracture elements in the computational grid. The modified code is used to simulate flow along single fractures, and infiltration into pervasively fractured formations.

Physical Description

7 p.

Notes

INIS; OSTI as DE92017022

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  • 3. international high level radioactive waste management (IHLRWM) conference, Las Vegas, NV (United States), 12-16 Apr 1992

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  • Other: DE92017022
  • Report No.: LBL--31975
  • Report No.: CONF-920430--98
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 140771
  • Archival Resource Key: ark:/67531/metadc626214

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  • April 1, 1992

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • April 5, 2016, 10:40 a.m.

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Zimmerman, R.W. & Bodvarsson, G.S. Semi-analytical treatment of fracture/matrix flow in a dual-porosity simulator for unsaturated fractured rock masses, article, April 1, 1992; California. (digital.library.unt.edu/ark:/67531/metadc626214/: accessed August 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.