Thermofluids L7-8

Property

one value for given thermodynamic state

Equilibrium

no tendency for the state of a system to change with time

quasi-equilibrium process

thermodynamic state is always known as departure from equilibrium is negligible

Solid

molecules DO NOT move relative to each other, molecules close together with strong attractive forces

Liquids

molecules close enough together for attractive forces to dominate, no preferred shape

Gases

Molecules far apart with no attractive forces, expand to fill available volume