u = 1/ ln(z) + 5.5
= von Karman
constant = 0.41
u = 1/0.41 ln(z) + 5.5 = 2.44 ln(z) + 5.5
When u = z,
z = 2.44 ln(z) + 5.5
=> z - 5.5 - 2.44 ln(z) = 0
This is a transcendental equation. The solution of the equation can be found by using Goal Seek in MS Excel.
z = 11.44 units
So, height of viscous sublayer is 11.44 units.
9 10%) The velocity distribution over the hydraulically - smooth bed takes the following form: 1In(z*)+5.5...
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