Fig. 2From: Analyzing the influence of correlation length in permeability on convective systems in heterogeneous aquifers using entropy productionThree examples of permeability fields in the reservoir model used in this study. Permeability fields only differ in the prescribed horizontal correlation length (here, 500Â m, 2500Â m, and 5000Â m). All models have the same random number seed, so the general spatial location of high- and low-permeable areas is preserved. Note that the model is strongly vertically exaggeratedBack to article page