Only the permeability in the vertical direction (top view) is considered.
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Permeability
= 0,56
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Permeability
= 0,089
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Basket permeability = hole area/basket area (real number between 0 and 1)
Hole area = white area
Basket area = white area + black area
When no basket is used, the permeability has its maximum value = 1.
When there are no holes in the basket, the permeability has its minimum value = 0.