In fluid mechanics, researchers use the compressibility factor, denoted as Z, as a correction factor to accommodate the deviation of real gases from ideal gas behavior. They define it as the ratio of the molar volume of a gas to the molar volume of an ideal gas at the same temperature and pressure.
Where:
- is the pressure of the gas,
- is the volume of the gas,
- is the universal gas constant (8.314 J/(mol K)),
- is the temperature of the gas.