UV ADV
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- Option to activate/deactivate horizontal and vertical advection of momentum. If no additional options are specified, the default is to discretize the horizontal momentum with a third-order upstream bias advection scheme with velocity dependent hyper-viscosity and the vertical momentum with a fourth-order, centered differences scheme. Since there is some implicit viscosity associated with the default discretization, the user may avoid adding an explicity vicosity to the solution to suppress excisive smoothing.
- routine = step2d.F, rhs3d.F
