Alternate Definitions for mechanical internal boundary layer

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Term: mechanical internal boundary layer
Definition:

(Abbreviated MIBL.) An internal boundary layer caused by advection of air across a discontinuity in surface roughness. When the new surface is rougher than the old one, the MIBL depth grows roughly as the 0.8 power of the ratio of the two roughness lengths. In this example, the MIBL grows to include the whole surface layer.

Created 2023.04.16
Last Modified 2023.04.16
Contributed by Ryan McGranaghan
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