Groundwater pp 195-209 | Cite as
A Study of the Characteristics of Groundwater Solute Transport Parameters
Abstract
The study is an attempt to evaluate the behaviour of constituents/pollutants moving with groundwater. Three examples having field relevance have been demonstrated in the study. Dispersivity, adsorptivity and decay which are primary parameters affecting the transport phenomena have been considered. The dispersivity which is the main characterizing parameter in groundwater solute transport problems has been considered for sensitivity analysis. It has also been attempted to quantify errors when a when a 3-D problem is simplified to a 2-D problem and a 2-D problem to a 1-D problem for convenience. The result indicated that one-dimensional analytical and numerical solution of transport equation compares well but simplifying a two-/three-dimensional transport problem to a one-dimensional problem leads to error due to transverse dispersion. Close to the source, advection dominates, whereas away from it the dispersion phenomena dominate. It was also seen that transverse dispersivity becomes prominent as distance increases from the source.
References
- McDonald MG, Harbaugh AW (1988) A modular three-dimensional finite-difference groundwater flow model—techniques of water resources investigations of the United States Geological Survey. Book. 6, Chap. A1, U.S. Geological SurveyGoogle Scholar
- Ogata A, Banks RB (1961) A solution of the Differential Equation of longitudinal dispersion in porous media. Professional Paper 411-A, USGS. US Govt. Printing Office, Washington D.C.Google Scholar
- Zheng C (1992) MT3D, A modular three-dimensional transport model, version 1.5: documentation and user’s guide. S.S. Papadopulos and Associates, Inc., MarylandGoogle Scholar