Porosity
Porosity is expressed as the volume not occupied by solid material
n = Vv / V
= 1 - ρbulk / ρsolid (1)
where
n = porosity
Vv = void volume (m3, ft3)
V = total volume (m3, ft3)
ρbulk = bulk density (kg/m3, slugs/ft3)
ρsolid = solid density (kg/m3, slugs/ft3)
Related Topics
• Material Properties
Properties of gases, fluids and solids. Densities, specific heats, viscosities and more.
Related Documents
Air Filters - Arrestance and Efficiency
Air filters efficiency and arrestance.
Coal - Classification
Classification of coal based on volatile matter and cooking power of clean material.
Density, Specific Weight, and Specific Gravity – Definitions & Calculator
The difference between density, specific weight, and specific gravity. Including formulas, definitions, and reference values for common substances.
Food Products - Bulk Densities
Bulk densities of some common food products like grain, corn, barley, sugar and more.
Perlite Insulation
Thermal conductivity - k-values - vs. temperature.
Soil and Rock - Bulk Factors
Soil and rock expansion - or swell - after mining.