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Documentation

How to set Velocity Outlet Boundary Conditions?

Question

How should I set velocity outlet boundary conditions?

Solution

If you use Fixed value, you need to define velocity with respect to the coordinate system. This means, based on the flow direction, assign U_x, U_y, U_z and set (+) or () whether the direction is in positive or negative axis.

If you use flow rate, you need to define either

  • Mass flow rate, or
  • Volume flow rate

In this case, you need to define flow rate as negative to ensure that flow leaves the domain.

Important Information

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Last updated: July 7th, 2020

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