Numerical simulation of ground waters contamination and protection

Authors

  • V. V. Biliaieva Cand. Sc. (Tech.), Associate Prof., Ukraine
  • D. YU. Smalii postgraduate, Ukraine
  • V. Perkin stud., Ukraine

Keywords:

ground waters pollution, numerical simulation, underground wall

Abstract

Abstract.  Purpose. Development of a numerical model  to calculate the dynamics of  ground waters contamination  after spillages at railways and ground waters protection by using underground wall. Methodology. For the numerical simulation of contaminant transport  in ground waters the 2D transport equation is used. This equation takes into account the effect of ground waters speed, dispersion process, the intensity of emission. For the numerical integration of the governing equation of contaminant transport the implicit finite-difference splitting scheme is used. The numerical calculation is divided into fifth steps of splitting and at each step of splitting the unknown value of the contaminant  concentration  is determined by the explicit scheme which is called “ scheme of  running calculation”. On the basis of the numerical model generic model was developed. To code the  finite – difference equations FORTRAN language was used. Computational experiments  were carried out to estimate the possible contamination zone after spillage at Pridneprovskaya railway. Findings. The proposed model allows you to calculate the ground waters contamination due to the spillage  of different cargo at railways.  The model allows to determine the size of the ground waters contamination and its dynamics after spillage at railways. This model also allows to predict the contamination area development in the case of underground wall application to reduce dimensions of contamination area.  Results of numerical experiments are presented. Originality. An efficient numerical model allowing to calculate quickly the ground waters contamination after spillages at railways was developed. Practical value. The developed numerical model can be used to estimate the size and intensity of contamination zone after spillages at railways. With the help of the developed numerical model it is possible to solve the problem of assessing the impact of accident spillage at railways and develop protection measures.

Author Biographies

V. V. Biliaieva, Cand. Sc. (Tech.), Associate Prof.

Department of «Fluid Dynamics, Energy and Mass Transfer», Dnipropetrovsk National University after Oles Gonchar, Gagarin avenue, 72, Dnipro, 49010, Ukraine, tel. +38 (056) 760-91-07

D. YU. Smalii, postgraduate

Department of «Fluid Dynamics, Energy and Mass Transfer», Dnipropetrovsk National University after Oles Gonchar, Gagarin avenue, 72, Dnipro, 49010, Ukraine, tel. +38 (056) 760-91-07

V. Perkin, stud.

Department of «Fluid Dynamics, Energy and Mass Transfer», Dnipropetrovsk National University after Oles Gonchar, Gagarin avenue, 72, Dnipro, 49010, Ukraine, tel. +38 (056) 760-91-07

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Published

2017-04-27

Issue

Section

Energy, ecology, computer technology in construction