Abstract
In solute transport through porous media in column experiment, increasing of apparent dispersion coefficient D as distance can be observed. This kind of phenomena has been thought by heterogeneous permeability. But Taylor theoretically explained by Lagrangian correlation function that constant coefficient D requires a time while solute particles go through various velocities. This concept can be used in porous media also.As a phenomenon to simplify porous media flow, solute transport in laminar pipe flow is studied. Solute transport is simulated by stochastic-Eulerian approach and compared with previous theories from Lagrange or Euler view points. Results show good fitting to the Lagrangian correlation theory and time scale t0, in which D changes. Furthermore, they indicate that D is underestimated by using 1-D Eulerian theory in time scale same as t0.
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