The ratio of the coeffecient of friction drag in laminar boundary layer compared to that in turbulent boundary layer is proportional to

Q. Consider the following statements and select the correct answer from options given below:

1. The velocity gradient inside the boundary layer is constant over the length.

2. Boundary layer thickness increases more rapidly in turbulent boundary layer than in laminar boundary layer.

Q. The thickness of the turbulent boundary layer in case of a flat plate parallel to fluid flow is proportional to

Q. For a turbulent boundary layer (under zero pressure gradient), the velocity profile is described by the one-fifth power law. What is the ratio of displacement thickness to boundary layer thickness?

Q. If in a turbulent boundary layer the velocity distribution is assumed to be given by $u\propto y^{1/4}$, then the boundary layer thickness varies with longitudinal distance X as

Q. The thickness of thermal boundary layer is less than hydrodynamic boundary layer in a laminar flow, when