Finally estimating the tortuosities of the paths through a medium is highly dependent on the shape of the structuring element used to process the geodesic distances.
Thus these disconnected components must be reconnected to the marker faces in order to extract the full geodesic paths from their tortuosities, for further morphological characterization or for further processing like flow simulation.
20b shows that the paths inside the pores have fairly small tortuosities close to 1, which proves that the opposite faces are mostly linked by direct paths in the three directions.
8, thresholding the 3D images of tortuosities of Thermisorel[TM] leads to disconnected components.
Comparison of Tortuosities for Staggered-Array Unit Cells.
Over the whole porosity range, both anisotropic ratios of the tortuosities are less than one, indicating the hydraulic flow and passive diffusive transport are more tortuous in the x direction than in the y direction.
For a configuration case of [phi] = 0.7, results for hydraulic flow are shown in Figure 17 and the computed hydraulic tortuosities are [[tau].sub.h, x] = 1.3727 and [[tau].sub.h, y] = 1.3393.
The only difference between both simulations lies in the tortuosities of the cylinders.
The morphological tortuosities in the Ox and Oy directions of fibrous and porous media for both materials have quite the same histograms.
The morphological characteristics of this new material such as the density profiles, the covariance, the opening granulometry, the specific surface area, and the morphological tortuosities according to Ox and Oy, still correctly fit the real Thermisorel[TM].