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download pdf version of PhD book - Universiteit Utrecht

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4. Upscaling Adsorbing Solutes: Pore-Network Modeling<br />

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<br />

Figure 4.13: Distribution <strong>of</strong> the local-scale distribution coefficient, k d , within<br />

the network for the calculation <strong>of</strong> Figure (4.14).<br />

repeated for a range <strong>of</strong> velocities between 0.5 and 5.5 m/d. Figure (4.14) shows<br />

the dependency <strong>of</strong> the core-scale detachment coefficient on velocity for both<br />

cases. It is evident that heterogeneity in local-scale distribution coefficient<br />

does not significantly affect the value <strong>of</strong> the upscaled detachment coefficient.<br />

Figure 4.14: Core-scale detachment rate coefficient, k c det, as a function<br />

<strong>of</strong> average pore-water velocity.<br />

Figure (4.14) shows that the heterogeneity <strong>of</strong> local-scale k d does not considerably<br />

affect the dependency on velocity.<br />

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