Resistance Coefficients for Different Geometry Thicknesses

Modification of Resistance coefficients when applying to different geometry thicknesses of the porous medium zone.

Coefficients once calculated from the Experimental values are set for a specified pressure loss per unit length/thickness (in the direction).
No alterations are needed when thickness/length in domain is changed. Ansys Fluent takes care of the thickness/length and computes the correct pressure drop.
To explain: For example: experimental values of pressure drop for domain thickness/length of 1m are used to calculate the coefficients. But porous region (in computational domain) is of 500 mm in thickness/length. Still Ansys Fluent will compute the correct pressure drop across the 500 mm thickness/length using the already calculated coefficients. Therefore, there is no need to alter the coefficients for variable porous region thickness/length.

For more details refer to this document