Outflow

This node provides a suitable boundary condition for convection-dominated heat transfer at outlet boundaries. In a model with convective heat transfer, this condition states that the only heat transfer occurring across the boundary is by convection. The temperature gradient in the normal direction is zero, and there is no radiation. This is usually a good approximation of the conditions at an outlet boundary in a heat transfer model with fluid flow.

Boundary Selection

In most cases, the Outflow node does not require any user input. If required, select the boundaries that are convection-dominated outlet boundaries.

Location in User Interface

Context menus
Heat Transfer in Solids>Outflow
Heat Transfer in Fluids>Outflow

Ribbon

Physics Tab with interface as Heat Transfer in Solids or Heat Transfer in Fluids selected:
Boundaries>interface>Outflow