Hi @kkanade ,
For shallow water waves applications, the Froude number is used to define three flow conditions:
-subcritical (Fr<1), the water velocity < wave velocity, namely downstream conditions affect the upstream flow;
-critical (Fr=1), the water velocity = wave velocity, upstream waves remain stationary;
-supercritical (Fr>1), the water velocity > wave velocity, namely upstream flow is not affected by the downstream conditions.
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