Non-Stationary Contaminant Plumes in the Advective-Diffusive Regime

Porous media with low/moderate regional velocities can exhibit a complex dynamic of contamination plumes, in which advection and molecular diffusion are comparable. In this work, we present two-dimensional scenario constant concentration source impermeable upper lower boundaries. order to characterise the plume patterns, detailed discriminated dimensionless technique is used obtain groups that govern problem: an aspect ratio domain including characteristic lengths, two others relating time horizontal length spread contamination. The monomials related each other enable their dependences be translated into set new universal abacuses. Extensive numerical simulations were carried out check plot these type curves. abacuses provide tool directly manage process, covering wide spectrum possible real cases. Among applications interest, they predict maximum transversal extensions time-spatial iso-concentration patterns according physical parameters problem.