Scapa Flow | Mas Flow 2 | Mas Flow | Nu Flow | Flow network | Flow Country | flow | Volumetric flow rate | Stokes flow | Mas Flow: Los Benjamins | Laminar flow | Hustle & Flow | Flow My Firetear | Flow measurement | Even Flow | Energy flow | An Endress+Hausser electromagnetic flow meter | Where the Rivers Flow North | Real Time Media Flow Protocol | Mass flow sensor | laminar flow | Knudsen flow | Information flow | gene flow | Flow tracer | Flow My Tears, the Policeman Said | Flow line | Flow la Discoteka | Flow control | Flow chemistry |
The last four equations describe the evolution of slowly varying wave trains over bathymetry in interaction with the mean flow, and can be derived from a variational principle: Whitham's average Lagrangian method.