Classification of Fluids

Here is the Classification of Fluids is given below

Fluids are mainly classified as;

1. Ideal fluids

2. Real fluids

3. Newtonian fluids

4. Non-Newtonian fluids

1. Ideal fluid: A fluid having no viscosity and is incompressible is called ideal fluid.

2. Real fluid: Fluids having viscosity are called real fluids. All fluids are real fluids.

3. Newtonian fluids: A fluid in which shear stress (t) is directly proportional to velocity gradient (du / d * y) is called a Newtonian fluid. e.g. air, water, kerosene, alcohol, glycerine, etc.

4. Non-Newtonian fluids: The fluids in which shear stress is not proportional to velocity gradient are called Non-Newtonian fluids. e.g. toothpaste, gels, slurries, paints, lubricants, oils, etc.