What Is the Reynolds Number for Fluid Flow in a Tube?

[Chiralic]

Homework Statement

Afluid with a viscosity of 9.1 x 10-4 Pa.s and density 1.1 g/cm3 flows through a tube with an inner diameter of 10 mm and fills a 10 mL container in 29 s. What is the Reynolds number for this flow?

Homework Equations

I am assuming its this equation for a tube:

N= density x V x D_H/ u (mu=dynamic viscosity)

The Attempt at a Solution

Well no attempt yet. Not sure what mu is or how to calculate it in this equation, or how to calc the hydrolic diameter.
Some hints in the right direction would be appreciated. ty

 

[ideasrule]

You're given both numbers. The hydraulic diameter is 10 mm; the viscosity is 9.1 x 10-4 Pa.s.