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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 />

(a)<br />

(b)<br />

Figure 4.1: A representative domain <strong>of</strong> the multi-directional network structure<br />

and the coordination number distribution. The average coordination number is<br />

equal to 4.4.<br />

4.2.1 Pore size distributions<br />

In this study, we have used three different networks with different pore-throat<br />

size distributions. All three networks have the same coordination number distribution<br />

and the same pore body size distribution. The radius <strong>of</strong> pore bodies<br />

is given by an uncorrelated, truncated, lognormal probability distribution with<br />

an average <strong>of</strong> R = 0.33 mm. The radius <strong>of</strong> a pore throat is determined from<br />

the sizes <strong>of</strong> the two terminating pore-bodies. Figure (4.2) shows the distribu-<br />

72

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