Studies of non-isothermal flow in saturated and partially saturated porous media

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Physical and numerical experiments have been performed to investigate the behavior of nonisothermal flow in two-dimensional saturated and partially saturated porous media. The physical experiments were performed to identify non-isothermal flow fields and temperature distributions in fully saturated, half-saturated, and residually saturated two-dimensional porous media with bottom heating and top cooling. Two counter-rotating liquid-phase convective cells were observed to develop in the saturated regions of all three cases. Gas-phase convection was also evidenced in the unsaturated regions of the partially saturated experiments. TOUGH2 numerical simulations of the saturated case were found to be strongly dependent on the assumed boundary conditions ... continued below

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27 p.

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Ho, C.K.; Maki, K.S. & Glass, R.J. December 31, 1993.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Physical and numerical experiments have been performed to investigate the behavior of nonisothermal flow in two-dimensional saturated and partially saturated porous media. The physical experiments were performed to identify non-isothermal flow fields and temperature distributions in fully saturated, half-saturated, and residually saturated two-dimensional porous media with bottom heating and top cooling. Two counter-rotating liquid-phase convective cells were observed to develop in the saturated regions of all three cases. Gas-phase convection was also evidenced in the unsaturated regions of the partially saturated experiments. TOUGH2 numerical simulations of the saturated case were found to be strongly dependent on the assumed boundary conditions of the physical system. Models including heat losses through the boundaries of the test cell produced temperature and flow fields that were in better agreement with the observed temperature and flow fields than models that assumed insulated boundary conditions. A sensitivity analysis also showed that a reduction of the bulk permeability of the porous media in the numerical simulations depressed the effects of convection, flattening the temperature profiles across the test cell.

Physical Description

27 p.

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INIS; OSTI as DE94010395

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  • International high-level radioactive waste management conference, Las Vegas, NV (United States), 22-26 May 1994

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  • Other: DE94010395
  • Report No.: SAND--93-4045C
  • Report No.: CONF-940553--44
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 145196
  • Archival Resource Key: ark:/67531/metadc628515

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  • December 31, 1993

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  • June 16, 2015, 7:43 a.m.

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  • April 14, 2016, 7:04 p.m.

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Ho, C.K.; Maki, K.S. & Glass, R.J. Studies of non-isothermal flow in saturated and partially saturated porous media, article, December 31, 1993; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc628515/: accessed September 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.