Preliminary capillary hysteresis simulations for fractured rocks -- model development and results of simulations

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As part of the code development and modeling work being carried out to characterize the flow in the unsaturated zone at Yucca Mountain, Nevada, capillary hysteresis models simulating the history-dependence of the characteristic curves have been developed. The objective of the work has been both to develop the hysteresis models, as well as to obtain some preliminary estimates of the possible hysteresis effects in the fractured rocks at Yucca Mountain given the limitations of presently available data. Altogether three different models were developed based on work of other investigators reported in the literature. In these three models different principles are ... continued below

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85 p.

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Niemi, A. & Bodvarsson, G. S. November 1, 1991.

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Description

As part of the code development and modeling work being carried out to characterize the flow in the unsaturated zone at Yucca Mountain, Nevada, capillary hysteresis models simulating the history-dependence of the characteristic curves have been developed. The objective of the work has been both to develop the hysteresis models, as well as to obtain some preliminary estimates of the possible hysteresis effects in the fractured rocks at Yucca Mountain given the limitations of presently available data. Altogether three different models were developed based on work of other investigators reported in the literature. In these three models different principles are used for determining the scanning paths: in model (1) the scanning paths are interpolated from tabulated first-order scanning curves, in model (2) simple interpolation functions are used for scaling the scanning paths from the expressions of the main wetting and main drying curves and in model (3) the scanning paths are determined from expressions derived based on the dependent domain theory of hysteresis.

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85 p.

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OSTI as DE93015280

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  • Other Information: PBD: Nov 1991

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  • Other: DE93015280
  • Report No.: LBL--23593
  • Grant Number: AC03-76SF00098
  • DOI: 10.2172/138705 | External Link
  • Office of Scientific & Technical Information Report Number: 138705
  • Archival Resource Key: ark:/67531/metadc621065

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Office of Scientific & Technical Information Technical Reports

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  • November 1, 1991

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • Oct. 3, 2017, 6:21 p.m.

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Niemi, A. & Bodvarsson, G. S. Preliminary capillary hysteresis simulations for fractured rocks -- model development and results of simulations, report, November 1, 1991; California. (digital.library.unt.edu/ark:/67531/metadc621065/: accessed October 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.