APPLICATION OF THE CONTINUOUS-TIME RANDOM-WALK MODEL TO THE AIR SPARGING METHOD
2008
We performed a series of column tests of the air-sparging method, and thereby compare the experimental results with the simulation results of the continuous-time random-walk (CTRW) model. In the experiments, we found that the concentration of the retrieved gas (CO2) decreases in time by the power-law of the elapsed time, which agrees with previous studies. We also fitted the experimental results with the CTRW successfully. The procedures of determining the three model parameters (α, Δt, and Δx) is explained in detail. This study is, as far as the authors concern, the first trial to apply the CTRW to the two-phase flow.
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