Ergun Equation

The Ergun equation is a mathematical formula used to describe how fluids flow through packed beds or porous materials, like filters or catalytic reactors. It combines two types of resistance: one dominant when the fluid moves slowly (viscous forces) and another when it moves faster (inertial forces). This allows engineers to predict pressure drops as fluid travels through a packed structure, helping optimize designs for efficiency and safety in processes involving fluid flow through such systems.