A New Numerical Model Coupling Modified Method of Characteristics and Galerkin Finite Element Method for Simulation of Solute Transport in Groundwater Flow System

Nilkanth Hanmantrao Kulkarni 1 *

Aquademia: Water, Environment and Technology, Volume 2, Issue 2, Article No: 04.

https://doi.org/10.20897/awet/90719

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Abstract

A new numerical model coupling the modified method of characteristics (MMOC) with the Galerkin finite element method (GFE) is proposed for the assessment of groundwater pollution in regional groundwater flow system. The MMOC-GFE solves governing solute transport equation which involves the simulation of advection and dispersion parts by MMOC and GFE, respectively. This model allows the use of large time steps (large Courant numbers) and large spatial steps (large Peclet numbers) with stable and convergent solutions. The proposed model is successfully implemented for a test case which includes comparison of the model results with reported solutions of other numerical models. It is found that MMOC-GFE model is quite adequate in simulating solute transport in heterogeneous aquifer with combined pumping and injection schemes.

Keywords

solute transport, groundwater flow, courant number, peclet number

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Citation

Kulkarni, N. H. (2018). A New Numerical Model Coupling Modified Method of Characteristics and Galerkin Finite Element Method for Simulation of Solute Transport in Groundwater Flow System. Aquademia: Water, Environment and Technology, 2(2), 04. https://doi.org/10.20897/awet/90719

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