NURSING ANM AND GNM

Detailed explanation-1: -A fluid that has zero viscosity is called ideal or inviscid.

Detailed explanation-2: -In simple words, the Reynolds number is the ratio of the inertial forces acting on a fluid flowing through a closed surface such as a pipe to the viscous forces acting on it. Since, the Reynolds number is just a ratio of 2 forces, hence it is a dimensionless quantity.