The specific volume of a substance is the volume occupied by a unit mass of that substance. In other words, it is the amount of space occupied by one kilogram of the substance. Specific volume is the reciprocal of density. It provides a measure of how much volume a unit mass of substance occupies, and it is commonly used in thermodynamics and fluid mechanics to characterize the properties of substances, particularly fluids. The specific volume () of a substance, including fluids, is the volume occupied by a unit mass of the substance. It is the reciprocal of density (). The formula for specific volume is:
Where:
- is the specific volume,
- is the density of the substance.