TM 5-820-3/AFM 88-5, Chap. 3
where:
causing the depth of flow to increase which
Q=Discharge, cubic feet per second
necessitates increasing the side-wall height. The
n = Roughness factor
chart in figure 7-4 can be used to determine the
A=Area, square feet
amount of air entrainment and thus the total depth
S = Slope, feet per feet
of flow which is equal to the depth of air plus the
R=Hydraulic radius, feet
depth of water.
Air becomes entrained in flow through steep chutes
7-5
Previous Page
