In: Journal of Hydrology and Hydromechanics, vol. 65, no. 2
Pintu Das - Sultana Begam - Mritunjay Singh
Detaily:
Rok, strany: 2017, 192 - 204
Kľúčové slová:
Solute; Advection; Diffusion; Dispersion; Aquifer; Finite Difference Method.
URL originálneho zdroja: http://www.ih.sav.sk/jhh
O článku:
In this study, analytical models for predicting groundwater contamination in isotropic and homogeneous
porous formations are derived. The impact of dispersion and diffusion coefficients is included in the solution of the advection-
dispersion equation (ADE), subjected to transient (time-dependent) boundary conditions at the origin. A retardation
factor and zero-order production terms are included in the ADE. Analytical solutions are obtained using the Laplace
Integral Transform Technique (LITT) and the concept of linear isotherm. For illustration, analytical solutions for linearly
space- and time-dependent hydrodynamic dispersion coefficients along with molecular diffusion coefficients are presented.
Analytical solutions are explored for the Peclet number. Numerical solutions are obtained by explicit finite difference
methods and are compared with analytical solutions. Numerical results are analysed for different types of geological porous
formations i.e., aquifer and aquitard. The accuracy of results is evaluated by the root mean square error (RMSE).
Ako citovať:
ISO 690:
Das, P., Begam, S., Singh, M. 2017. Mathematical modeling of groundwater contamination with varying
velocity field. In Journal of Hydrology and Hydromechanics, vol. 65, no.2, pp. 192-204. 0042-790X (until 2019) .
APA:
Das, P., Begam, S., Singh, M. (2017). Mathematical modeling of groundwater contamination with varying
velocity field. Journal of Hydrology and Hydromechanics, 65(2), 192-204. 0042-790X (until 2019) .