Question

Write four limitations of Bernoulli's theorem

Answer 1

The four main limitations of Bernoulli's theorem are as follows:

• This theorem is applicable for Newtonian Fluids and hence cannot be used for non-newtonian fluids.

• The theorem doesn't take viscosity into account and hence viscous fluids cannot be considered applicable for this theorem.

• Bernoulli's Theorem is applicable only for streamline flow of fluids and hence cannot be used during turbulent flow (when the Reynolds number is greater than 2000).

• The fluid has to be incompressible and hence its density cannot change with time or pressure.

So , Bernoulli's Theorem has quite a number of disadvantages because of which it can't be used with any fluids.

Answer 2

Answer:

during the radial flow a part of energy of liquid is ever consumed against the force directed towards centre but it is not considered.