File:HY8-StillingBasin.jpg: Difference between revisions

Stilling basin

Variables from the figure

• W₀ — width of the channel
• W_B — Width of the basin
• y₀ — Culvert outlet depth
• y₁ — Depth entering the basin
• y₂ — Conjugate depth
• S₀ — Slope of the channel
• S_T — Slope of the transition
• S_S — Slope leaving the basin
• Z₀ — ground elevation at the culvert outlet
• Z₁ — ground elevation at the basin entrance
• Z₂ — ground elevation at the basin exit
• Z₃ — Elevation of basin at basin exit (sill)
• L_T — Length of transition from culvert outlet to basin
• L — Total basin length
• L_B — Length of the bottom of the basin
• L_S — Length of the basin from the bottom of the basin to the basin exit (sill)
• T_w — Tailwater depth leaving the basin