A Simple Particle Tracking Technique for Solving the Convection-Dispersion Equation
نویسندگان
چکیده
A simple particle tracking technique based on an Eulerian-Lagrangian finite element approach was used to solve the solute transport equation. The method introduces only one moving particle to track each concentration front continuously forward in one-dimensional transport problems. At each time step, all element nodes are taken as moving particles along the characteristic path. The single-step reverse particle tracking technique was adopted to obtain the ‘convective components’ of concentrations for nodes away from the concentration front, whereas the convective components for nodes within the front area were obtained by the single-step forward particle tracking technique. Results from a large number of simulations showed that the numerical solution improved when the Lagrangian derivative was multiplied with a correction factor larger than one.
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