1. Fluid Flow Continuity and Bernoulli’s Equation

2. Ideal Fluid
Nonviscous
Flow is steady
Incompressible
Irrotational

3. Conservation of Mass
Mass In
Mass Out

4. Varying Area
Mass Out
Mass In

5. Flow Rate
Continuity Equation
Av is the volume flow rate

6. v1 = 1 m/s
v2 =?
d2= 2 cm
d1= 8 cm

8. Bernoulli’s Equation

9. Conservation of Energy?

10. Constant v
Constant y

11. Pressure and Speed
Bernoulli’s Equation indicates that as the speed of a fluid increases the pressure decreases.

12. Static Problem Fluid not moving A = 0.02 m2 P= 202 kPa A = 0.05 m2

13. Fluid Flow
A = 0.02 m2
P= 202 kPa
A = 0.05 m2
v = 4 m/s
P= ? kPa
2 m

14. What is the gauge pressure in the water main?
d = 2 cm
2 m
d = 6 cm
25 L in 30 s