Flow

To enable the fluid pressure and momentum equations, check Flow.

Disable Flow for conduction-only heat transfer analyses.

For forced convection scenarios, the flow and heat transfer calculations can be run separately (although it is not required). After the flow analysis finishes, disable Flow, enable Heat Transfer. Note that this process is automated by enabling Auto Forced Convection.

For natural convection, both Flow and Heat Transfer must be enabled.

Note: You can include both hydrostatic pressure and buoyancy in your analysis. However, depending on temperature gradients, the effects of the different phenomena could mask one another.