e/Law of the wall

Information
has gloss	eng: In fluid dynamics, the law of the wall states that the average velocity of a turbulent flow at a certain point is proportional to the logarithm of the distance from that point to the "wall", or the boundary of the fluid region. This law of the wall was first published by Theodore von Kármán, in 1930. It is only technically applicable to parts of the flow that are close to the wall (<20% of the height of the flow), though it is a good approximation for the entire velocity profile of natural streams.
lexicalization	eng: law of the wall
lexicalization	eng: Universal logarithmic wall law
instance of	c/Fluid dynamics