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Solute transport with multisegment, equilibrium-controlled reactions: A feed forward simulation method

Water Resources Research
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https://doi.org/10.1029/WR026i009p02029

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Abstract

The feed forward method (FF method) is one of the ways of formulating operational equations which simulate transport of solutes influenced by equilibrium-controlled reaction networks. The FF method provides increased solution efficiency by adapting its formulations to some of the network's fundamental features. In this study the FF method is further developed by adapting and testing it for a variety of network conditions. Classes of homogeneous, classical heterogeneous, and ion exchange network segments are studied. Networks may contain only a single class of segments or they may involve two or three segment classes. The FF method is found applicable to all the cases tested. In only one of these cases, for the more complex configurations of network segments, the FF method does not attain all of its objectives. A systematic, stepwise approach to method development is employed. It reveals, for certain subnetworks, an a priori inadmissibility, irrespective of the method used, and, for some other networks, an a priori irrelevance to transport dynamics. It also demonstrates that when certain subnetworks, belonging to different segment classes, form a single network, synergism (or antagonism) may occasionally arise and decrease (or increase) the difficulty of solving the transport problem.

Publication type Article
Publication Subtype Journal Article
Title Solute transport with multisegment, equilibrium-controlled reactions: A feed forward simulation method
Series title Water Resources Research
DOI 10.1029/WR026i009p02029
Volume 26
Issue 9
Year Published 1990
Language English
Publisher American Geophysical Union
Contributing office(s) Toxic Substances Hydrology Program
Description 27 p.
First page 2029
Last page 2055
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