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A Semi‐Analytical Solution Based on a Numerical Solution of the Solute Transport of a Conservative and Nonreactive Tracer
Author(s) -
Zhang Jim,
Clare Jay,
Guo Jia
Publication year - 2011
Publication title -
groundwater
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.84
H-Index - 94
eISSN - 1745-6584
pISSN - 0017-467X
DOI - 10.1111/j.1745-6584.2011.00865.x
Subject(s) - tracer , computer simulation , groundwater , numerical analysis , sorption , flow (mathematics) , steady state (chemistry) , mass transport , numerical models , mechanics , environmental science , computer science , chemistry , biochemical engineering , geology , mathematics , geotechnical engineering , simulation , engineering , physics , mathematical analysis , organic chemistry , adsorption , nuclear physics
In the evaluation of potential risk from ingestion of groundwater near an impacted site, numerical simulation of fate and transport processes of chemicals of concern is often required. If there is potential concern about multiple chemicals, numerical simulation of each chemical separately is often needed. In this paper, a semi‐analytical solution is presented based on a numerical solution of the transport of a conservative and nonreactive tracer. When multiple chemicals undergoing sorption and first‐order degradation need to be modeled, we can avoid performing individual numerical simulations for each chemical by applying the semi‐analytical solution. Numerical test runs were conducted to verify the semi‐analytical solution; simulation results reveal that the concentrations derived from the semi‐analytical solution are identical to those derived from the individual numerical fate and transport model simulations. The semi‐analytical solution requires steady‐state flow conditions, no continuing contaminant source, and similar initial source concentration distributions.