Question

Explain differences between inviscid and viscous flow.

Answer 1

When the differerent layers of liquid or gas move with respect to each other, it create a frictional force in between the layers. which result in slowing down of faster moving laye by a slow moving layer. This internal resistance to flow is caused due to motion between different layers to one another is termed as Viscosity and the liquid is called viscous.

On the other hand, there are some areas where the viscosity is zero. The flow in such areas of zero viscosity, is termed as “Inviscid” flow. Only “super fluids” (e.g.; superfluid helium) are believed to have inviscid flow, that is, zero viscosity