Question

The euler equations disregard viscosity. Give the name of the equations that include viscosity.

Answer 1

Viscosity - This defines the fluid's resistance to flow.

Viscosity (η) = Ratio of shearing stress to velocity gradient.

η = (F/A)/ (Δv/Δz) = (F/A) / (dv /dz) -- Viscosity equation for Newtonian fluid (ideal fluid)

Kinematic viscosity is the ratio of the viscosity of a fluid to its density.

v =  η / ρ