Pressure and flow:Fluid types

Fluid types

Fluids may be classified as follows:

• Ideal fluid

• Real fluid

• Newtonian fluid

• Non-Newtonian fluid.

Ideal fluid

An ideal fluid is one, which is incompressible and has no viscosity. Such a fluid is only imaginary, as all existing fluids possess some viscosity.

Real fluid

Simply speaking, a fluid which possesses viscosity is known as a real fluid. All fluids, in actual practice are real fluids.

Newtonian fluid

During the course of our discussion on viscosity, we have seen that shear stress is proportional to the velocity gradient i.e. ra dv/dy. A real fluid in which the shear stress is proportional to the velocity gradient is known as a Newtonian fluid.

Non-Newtonian fluid

A real fluid in which the shear stress is not proportional to the velocity gradient is known as a non-Newtonian fluid.

Related posts:

Concepts for estimating pumping energy costs:Flow regulation by varying speed
Concepts for estimating pumping energy costs:Specific energy
Pumps:Rotodynamic pumps
Actuators:Construction of pneumatic cylinders.
Energy and Efficiency:PIPE FLOW CALCULATIONS
Particle degradation:Particle melting and Mechanics of the process
THE COMPRESSOR:MOBILE COMPRESSORS
Moisture and condensation:Relative humidity and Psychrometric chart.
Low pressure and vacuum:Discharge period and pulsations and Positive pressure systems.
Design procedures:Typical pipeline and material influences
HYDRAULIC PUMPS:Gear Pumps and External Gear Pumps
Hydraulic motors:Continuous rotation hydraulic motors
Hydraulic pumps:Pump performance
Process Control Pneumatics:signals and standards
POWER AND REFRIGER A TION CYCLES:THE BRAYTON CYCLE WITH REGENERATION

Leave a comment

Your email address will not be published. Required fields are marked *