21-04-2015, 12:45 PM
When real fluids flow they have a certain amount of internal friction called viscosity. It exists in both liquids and gases and is essentially
a friction force between different layers of fluid as they move past one another. In liquids the viscosity is due to the cohesive forces between
the molecules whilst in gases the viscosity is due to collisions between the molecules.
Attachment : [attachment=28785]
a friction force between different layers of fluid as they move past one another. In liquids the viscosity is due to the cohesive forces between
the molecules whilst in gases the viscosity is due to collisions between the molecules.
Attachment : [attachment=28785]