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The Effects of Cut-Off Walls on Repulsing Saltwater Based on Modeling of Density-Driven Groundwater Flow and Salt Transport
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نویسنده
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Jamshidzadeh Zahra ,Ghasemzadeh Hasan
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منبع
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Numerical Methods In Civil Engineering - 2017 - دوره : 1 - شماره : 4 - صفحه:45 -53
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چکیده
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A two-dimensional fully implicit finite difference model, which can be easily extended to three dimensions, is developed to study the effect of cut-off walls on saltwater intrusion into the aquifers. this model consists of a coupled system of two nonlinear partial differential equations which describe unsteady density-driven groundwater flow and solute transport. the numerical model is verified by the henry problem. a good agreement between this model and the semianalitical solution of henry problem shows the efficiency of this method for seawater intrusion problems. the effect of cut-off walls on reduction of saltwater intrusion in the henry problem is investigated. furthermore, the effect of geometric parameters of the cut-off wall such as depth and distance from the coast on repulsing saltwater is considered. subsequently, the application of the presented model is considered to evaluate the effect of cut-off wall on repulsing salt water intruded by a pumping well located above the transition zone, which demonstrates that the cut-off wall has strong impact on repulsing saltwater intruded. for example, it repulses more than 45% salt water intruded by the discharge well in the henry problem.
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کلیدواژه
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Saltwater Intrusion ,Flow And Solute Transport ,Density-Driven Flow ,Henry Problem ,Cut-Off Wall.
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آدرس
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University Of Kashan, Faculty Of Engineering, ایران, K.N. Toosi University Of Technology, Department Of Civil Engineering, ایران
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پست الکترونیکی
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ghasemzadeh@kntu.ac.ir
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Authors
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