The velocity profile of a turbulent flow along a wall consists of four regions, characterised by the distance from the wall. The correct sequence of these regions from the wall is:
1
buffer layer, transition layer, viscous sub - layer, turbulent layer
2
buffer layer, viscous sub - layer, transition layer, turbulent layer
3
viscous sub - layer, transition layer, buffer layer, turbulent layer
4
viscous sub - layer, buffer layer, transition layer, turbulent layer
5
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