Inlet, Barrel and Outlet Zones



During calculations, the culvert is divided into three zones:


When Velocity Reduction Factors are applied they will be multiplied to the average cross section velocity in the specified zones at the nodes defining the zone.

For this application the Barrel Velocity (VB) is the average cross-sectional flow in the barrel approximately one culvert diameter downstream from the inlet and represents the area immediately downstream of the inlet Contraction and Expansion zone.


See also: Inlet Head Loss Coefficient, Inlet Contraction Velocity, Outlet Hydraulics, Velocity Reduction Factors