online_limiting_contraction:   Limiting contraction ratio σ in open channel flow
INPUT DATA:

Upstream
Froude Number F1:    

Downstream
Froude Number F3:    



Set of values calculator: 
Online limiting contraction set.

Reference: 
The limiting contraction ratio revisited.


OUTPUT:

Limiting contraction ratio
based on energy balance:

σ = bc / b1:   0

Limiting contraction ratio
based on momentum balance:

σ = bc / b3:   0

            

  Your request was processed at  10:49:42 am on February 2nd, 2026   [ 260202  10:49:42 ].   [140413]