Source: wikibot/discharge-coefficient
= Discharge coefficient
{wiki=Discharge_coefficient}
The discharge coefficient (often denoted as \\( C_d \\)) is a dimensionless number used in fluid dynamics to characterize the flow through an orifice, nozzle, or other flow constrictions. It represents the efficiency of the flow as it passes through a restriction relative to the theoretical flow predicted by Bernoulli's equation.