Types of Fluids

 

Types of Fluids:

1. Ideal Fluid
2. Real Fluid
3. Newtonian fluid
4. Non-Newtonian fluid

 

1)      Ideal Fluid: 

      Fluid that has no viscosity is called Ideal Fluid. It is incompressible in nature. Practically no ideal fluid exists.

2)     Real Fluid: 

     Real fluids are compressible in nature. They have some viscosity. Example: Kerosene, Petrol, Castor oil.

3)      Newtonian Fluid: 

     Fluids that obeys Newton’s law of viscosity are known as Newtonian Fluid. For a Newtonian fluid, viscosity is entirely dependent upon the temperature and pressure of the fluid. Most common fluids such as water, air, and gasoline are Newtonian under normal conditions. Or Fluids in which shear stress is directly proportional to rate of deformation are Newtonian fluids.

4)      Non- Newtonian Fluid:

      Fuids that does not obey Newton’s law of viscosity are Non-Newtonian Fluids.

Fluids in which shear stress is not directly proportional to deformation rate are Non-Newtonian fluids. Many common fluids exhibit non-newtonian behavior.Examples: toothpaste