Civil Engineering - Hydraulics - Discussion

Question clearly stated that 'DIMENSION LESS parameter NOT APPLICABLE'.

So the only option having dimension is kinematic viscosity, So, the answer is 'D'.

How? Explain @Sudeep.

Option D.

Kinematics viscosity = dynamic viscosity/density.

Other options have not any unit.

It means that other dimensionless parameters.

Only the kinematic viscosity is dimensional parameter which cannot be applied to any dimensionless parameters of flowing fluid.

The dimensionless parameter that is not applicable to flowing liquids is the Pressure coefficient (Option 3).

The pressure coefficient is commonly used in aerodynamics and fluid dynamics to analyze pressure distribution around objects in fluid flow, such as airfoils. It is not a parameter specifically associated with flowing liquids but rather used for analyzing fluid behaviour around solid objects in motion.

Since all are dimensionless except kinematic viscosity and are also applicable to flowing liquids but kinematic viscosity is not applicable although it has dimension. So the correct answer is "d".

The Kinematic viscosity is not a dimensionless parameter m2/sec.

So, the correct opinion is D