Experimental and numerical simulation of contaminant transport through layered soil

Sharma, Pramod Kumar; Sawant, V. A.; Shukla, Sanjay Kumar; Khan, Zubair

doi:10.1179/1939787913y.0000000014

Cited by 24 publications

(13 citation statements)

References 14 publications

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“…It is observed that with increase in the dispersivity the concentration is reduced when it reaches the end, as the solute spreads out in the direction of flow and decreases the concentration [20]. Similar trend of results was also reported by Sharma et al [9].…”

Section: Effect Of Diffusion/dispersionsupporting

confidence: 87%

“…Few researchers developed analytical solutions using Laplace transform for stratified porous media [1,2]. The numerical models used are finite layer method [3], boundary element techniques [4,5], finite difference method [6][7][8][9], finite element method [10][11][12] but all these models are gridbased and need discretisation of domain in elements, which can be sometimes difficult for complicated domains. In recent years meshfree methods are getting attention as their basic idea is to eliminate the structure of mesh and construct approximate solutions for the equation in terms of nodes [13].…”

Section: Introductionmentioning

confidence: 99%

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Two Dimensional Contaminant Transport Through Layered Soil Using Element Free Galerkin Method

Satavalekar

Sawant

2015

Indian Geotech J

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In the present study a numerical model of two dimensional contaminant transport through stratified saturated porous media has been analysed using meshfree method called element free Galerkin method. A two dimensional form of advective-diffusive transport equation for the multi-layered soil is considered for the analysis. A FORTRAN program has been developed to obtain numerical solution and the results are validated with the results in the literature. The results are in good agreement and further parametric study has been done. Effect of change of dispersion, velocity, porosity, distribution coefficient and thickness of layer has been observed on the concentration of the contaminant.

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Section: Effect Of Diffusion/dispersionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Two Dimensional Contaminant Transport Through Layered Soil Using Element Free Galerkin Method

Satavalekar

Sawant

2015

Indian Geotech J

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“…Recently, Sharma et al (2013) reported the experimental investigation of contaminant transport through saturated layered soil using the soil column experiment. The flow of the solute transport through such system was also simulated numerically.…”

Section: Experimental Investigationsmentioning

confidence: 99%

Contaminant transport through porous media: An overview of experimental and numerical studies

Patil¹,

Chore²

2014

Advances in environmental research

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The groundwater has been a major source of water supply throughout the ages. Around 50% of the rural as well as urban population in the developing countries like India depends on groundwater for drinking. The groundwater is also an important source in the agriculture and industrial sector. In many parts of the world, groundwater resources are under increasing threat from growing demands, wasteful use and contamination. A good planning and management practices are needed to face this challenge. A key to the management of groundwater is the ability to model the movement of fluids and contaminants in the subsurface environment. It is obvious that the contaminant source activities cannot be completely eliminated and perhaps our water bodies will continue to serve as receptors of vast quantities of waste. In such a scenario, the goal of water quality protection efforts must necessarily be the control and management of these sources to ensure that released pollutants will be sufficiently attenuated within the region of interest and the quality of water at points of withdrawal is not impaired. In order to understand the behaviour of contaminant transport through different types of media, several researchers are carrying out experimental investigations through laboratory and field studies. Many of them are working on the analytical and numerical studies to simulate the movement of contaminants in soil and groundwater of the contaminant transport. With the advent of high power computers especially, a numerical modelling has gained popularity and is indeed of particular relevance in this regard. This paper provides the state of the art of contaminant transport and reviews the allied research works carried out through experimental investigation or using the analytical solution and numerical method. The review involves the investigation in respect of both, saturated and unsaturated, porous media.

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“…Results confirm that the finite element program is in agreement with the values in literature and can be used for further research. Further, FEM program was validated with the values mentioned in Sharma et al (2014). Sharma et al (2014) have used FDM for solving the differential equation for heterogeneous media.…”

Section: Validationmentioning

confidence: 99%

“…Further, FEM program was validated with the values mentioned in Sharma et al (2014). Sharma et al (2014) have used FDM for solving the differential equation for heterogeneous media. The material properties are reported in Table 2.…”

Section: Validationmentioning

confidence: 99%

Numerical modelling of contaminant transport using FEM and meshfree method

Satavalekar

Sawant²

2014

Advances in environmental research

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Groundwater contamination is seeking a lot of attention due to constant degradation of water by landfills and waste lagoons. In many cases heterogeneous soil system is encountered and hence, a finite element model is developed to solve the advection-dispersion equation for layered soil system as FEM is a robust tool for modelling problems of heterogeneity and complex geometries. Recently developed Meshfree methods have advantage of eliminating the mesh and construct approximate solutions and are observed that they perform effectively as compared to conventional FEM. In the present study, both FEM and Meshfree method are used to simulate phenomenon of contaminant transport in one dimension. The results obtained are agreeing with the values in literature and hence the model is further used for predicting the transport of contaminants. Parametric study is done by changing the dispersion coefficient, average velocity, geochemical reactions, height of leachate and height of liner for obtaining suitability.

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Experimental and numerical simulation of contaminant transport through layered soil

Cited by 24 publications

References 14 publications

Two Dimensional Contaminant Transport Through Layered Soil Using Element Free Galerkin Method

Two Dimensional Contaminant Transport Through Layered Soil Using Element Free Galerkin Method

Contaminant transport through porous media: An overview of experimental and numerical studies

Numerical modelling of contaminant transport using FEM and meshfree method

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