Fluid Mechanics, Renoylds Number

[simonre7]

A particle falls in water and reaches its terminal velocity. if the density of the particle is 1100kg/m3, what is the velocity and diameter is Re = 1.0


Again guys bit lost with this one, there are so many different equations relating to this i don't know where to start. hopefully some one with a bit more experience can help me.

Thank you in advance.

 

[Astronuc]

A particle falls under gravity. What is the condition at terminal velocity, i.e. the particle no longer accelerates?

the Reynolds number is the ratio of inertial forces (v_sρ) to viscous forces (μ/L) and consequently it quantifies the relative importance of these two types of forces for given flow conditions.

http://en.wikipedia.org/wiki/Reynolds_number

v_s is mean velocity of fluid or velocity of object in fluid.