Semianalytic solution for transport of a two-member decay chain in discrete parallel fractures

Scott K. Hansen

Research output: Contribution to journalArticlepeer-review

Abstract

A wide variety of analytic solutions have been developed for 1-D contaminant transport, but to date the author is aware of none modeling a decay chain in parallel discrete fractures in porous media. In this note, the derivation is presented for a two-species first-order decay chain in such an environment, with an arbitrary concentration history specified upgradient, fracture advection, and diffusion into the porous matrix. The solution is presented in brief, followed by corroboration of its numerical implementation against two different existing numerical codes. An appendix contains a detailed derivation of the solution, and a Mathematica notebook that implements it and may be used by practitioners is enclosed as supporting information.

Original languageEnglish
Pages (from-to)6105-6110
Number of pages6
JournalWater Resources Research
Volume49
Issue number9
DOIs
StatePublished - 1 Sep 2013
Externally publishedYes

Keywords

  • analytic solution
  • first-order decay
  • fractured media
  • solute transport

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