Flow Rates

Question 1

Different streamlines

Answer 1

Cannot cross

Question 2

Viscosity is

Answer 2

■ Viscosity is the degree of internal friction in the fluid

■ The internal friction is associated with the resistance between two adjacent layers of the fluid moving relative to each other

Question 3

4 characteristics f an ideal fluid

Answer 3

■ The fluid is nonviscous
– There is no internal friction between adjacent layers

■ The fluid is incompressible – Its density is constant

■ Thefluidmotionissteady
– Its velocity, density, and pressure do not change in time

Thefluidmoveswithoutturbulence
No eddy currents

Question 4

Equation of continuity

Answer 4

For an incompressible fluid this means that the flow rate at one end is equal to the flow rate at the other
A1v1 =A2v2

A*v has units of volume unit per time

This is the flow rate
Know the area and the velocity? Boom there’s your flow rate

Question 5

Streamline flow is

Answer 5

– Every particle that passes a particular point moves exactly along the smooth path followed by particles that passed the point earlier

Laminar flow