Figure 5 | Scientific Reports

Figure 5

From: The influence of grain shape and size on the relationship between porosity and permeability in sandstone: a digital approach

Figure 5

Calculated fits to the porosity–permeability relationship displayed on log–log axes. A simple fit is shown (green) alongside the most effective fit incorporating grain sphericity (purple) shown in Fig. 4. The root mean square error (RMSE) values are reported for each fit, showing that the better fit is the simpler one in green, excluding any grain characteristics.

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