Fixed Bed Pressure Drop Calculator

Released: June 2023

Particle Properties
Particle Sphericity
Particle Diameter (mm)
Bed Porosity
Particle Density (kg/m³)
Gas Properties
Gas Flowrate (kg/h)
Gas Density (kg/m³)
Gas Viscosity (cP)
Column Properties
Column Diameter (m)
Column Length (m)

Ergun, Sabri. “Fluid flow through packed columns.” Chem. Eng. Prog. 48 (1952).


Volumetric gas flowrate
Superficial gas velocity:
Reynold’s Number:
Pressure drop per m:
Total Pressure Drop:

Source code: GitHub