1. Static flow and Its Application
Coulson & Richardson, Chapter 6

2. Fluids: Statics vs Dynamics

3. Fluid Statics Basic Principles: Fluid is at rest : no shear forces
Pressure is the only force acting
What are the forces acting on the block?
Air pressure on the surface - neglect
Weight of the water above the block
Pressure only a function of depth

4. Section 1: Pressure

6. Variation of pressure in an compressible fluid (gas)
for liquids: r is variable, e.g. for an ideal gas:
need to know T=T(z)

7. case of linear temperature variation:
case of uniform temperature: T=To
case of linear temperature variation:
T=To+bz
at z1=0 (sea level)
T=To
p1=po

15. Example 2.4
Consider a tank containing mercury, water, benzene, and air as shown. Find the pressure
(gauge) over the benzene. If an opening is made in the top of tank. Given SG of mercury, benzene
and water are 13.55, and 1.00 respectively. Use the density of water equal to 999
Kg/m3

16. Solution

17. Example 2.5

18. Solution

19. Example: Find PA- PB

20. Example 2.6 (self study)
Find expression of