Drainage down a wall

5 Other important flows 6.5.1 Drainage down a wall 

A liquid that was originally a layer of constant thickness on a vertical wall eventually forms a parabolic wedge shape and the thickness /zx as a function of the distance x from top of the liquid sample is given by 

The maximum shear stress in this situation—whether for Newtonian or non-Newtonian liquids—is at the wall, and is given by ojy = pgh when the wall is vertical, and the expression is multiplied by cos 6 if the wall is at an angle 0 with the vertical. 

The pressure drop P for laminar flow along a long slot is given by QtjLr 

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Drainage down a wall under the action of avity... 

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See also in sourсe #XX -- [ , , ]

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