1. Hydraulic System

2. FLUID SYSTEM BUILDING BLOCKS
The three basic building blocks of a fluid flow system can be considered to be equivalent of electrical resistance, inductance and capacitance.
Fluid systems can be considered to fall in to two categories.
1. Hydraulic. 2. Pneumatic
In hydraulic the fluid is a liquid and considered to be incompressible.
In pneumatic gas is used and which can be compressed.

3. Hydraulic resistance(R)
It is the resistance to flow which occurs as a result of a liquid flowing through valves or changes in pipe diameter.
P1 – P2 = R.q Where R = hydraulic resistance.

4. Hydraulic capacitance
This term is used to describe energy storage with a liquid when it is stored in the form of potential energy.
h = height of liquid.
q1,q2 = rate of liquid flow.
P = pressure difference

5. Then
where = rate of change of volume V in container.

7. Hydraulic inertance
It is equivalent of inductance in electrical systems or a spring in mechanical systems.
To accelerate a fluid and so increase its velocity a force is required.
Consider a block of liquid of mass m. The net force acting on the liquid,

8. Volume flow rate q= A.v
Where I= hydraulic inertance.

10. Derive the relationship between the height of liquids in the two containers with time.