# A viscous liquid moving from different holes

Say, we have bottled viscous liquid - such as a dishwashing liquid. There are two different caps for the bottle. One with a smaller hole, one with slightly bigger hole. Both holes are very small though.

Now, we invert the bottle with cap 1 on (smaller hole) then again with cap 2 (slightly bigger hole) .

Will the same liquid exhibit different (apparent viscosity) or same?

• How can we measure this viscosity looking at fluid flow? – Alex Trounev Jul 31 '19 at 14:07

The regular, diffusive viscosity, of dimension $$m^2/s$$ that appears in the Navier-Stokes equations divided by $$\rho$$, is mainly dependent on temperature in most newtonian fluids.