A flexible computer code for modelling transport in porous media: impact

  • Jauzein M
  • Andre C
  • Margrita R
 et al. 
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Abstract

Efficient computer codes for modelling solute transport in natural porous media are necessary to design experiments properly. The new IMPACT code and the associated modelling method are especially adapted for describing the transient transport of chemicals for various flow patterns with arbitrary chemical interactions. The basic assumptions include: either instantaneous local equilibrium or mass transfer kinetic limitations, steady flow, constant temperature, pressure and pore geometry. Application of the computer code is illustrated by the study of transient transport of Na+, Li+and Ca+in a saturated sandy alluvium. The step-by-step identification of chemical interactions and of the associated parameters is performed on laboratory experiments involving Na+and Li+. The flexibility of the computer code is illustrated by different descriptions of the chemical interactions involving caesium. Modelling of field experiments is briefly outlined and the ability of IMPACT code to model a real flow pattern is illustrated. © 1989.

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Authors

  • Michel SARDINUniversité de Lorraine - ENSIC - Nancy

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  • M. Jauzein

  • C. Andre

  • R. Margrita

  • D. Schweich

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