Sabri Ergun

Sabri Ergun (1 March 1918 in Turkey - 18 February 2006) was a chemical engineer.

Additional recommended knowledge

Daily Visual Balance Check

Weighing the right way

Guide to balance cleaning: 8 simple steps

He is widely recognized for his enthusiasm and many contributions to the fields of chemical engineering and solid state physics.

Ergun Equation

The Ergun Equation is a correlation derived by Ergun in 1952 for the friction factor in a column as a function of the Reynolds number:

where f_p and Re_p are defined as

and

where: Δp is the pressure drop across the bed,
L is the length of the bed (not the column),
D_p is the equivalent spherical diameter of the packing,
ρ is the density of fluid,
μ is the dynamic viscosity of the fluid,
V_s is the superficial velocity (i.e. the velocity that the fluid would have through the empty tube at the same volumetric flow rate), and
ε is the void fraction of the bed.

References

Flow through packed beds