...
Fluid flow which is not subjected to influence of the fluid viscosity.
It may happen for low-viscosity fluids or for the very high Reynolds numbers.
In this case case Navier-Stokes fluid flow momentum equation simplifies simplifies to Eauler Eauler fluid flow momentum equation.
This flow regime happens for high Reynolds numbers
, which originates from:LaTeX Math Inline body {\rm Re} \gg 1
| low-viscosity fluids | high velocities
| large distance to solid boundaries restricting the flow
|
In many practical applications the fluid viscosity can not be neglected even for the low-viscosity fluids.
This happens for example, when fluid flow is restricted by happening close to solid boundaries which interaction (a friction) with the fluid depends substantially on fluid viscosity.
...