[CFD_10]

Hello,

I have some questions regarding following concepts:
The law of wall, where




which is described here: https://en.wikipedia.org/wiki/Law_of_the_wall



and the velocity profile of the boundary layer ,e.g: Blasius velocity profile, given here: https://en.wikipedia.org/wiki/Blasius_boundary_layer


1. What is the difference between these two concepts?
2. If the law of wall is universal ,then why not using this law for boundary layer?
3. Is the Blasius velocity profile a special case of the law of wall?


What is the difference/relation between these two velocity profiles?
Thanks