You can simulate the effects of a fan by specifying a pressure jump across a boundary. When you define the pressure jump, you can specify it as a constant value or as one that varies as a function of volumetric flow rate. When you choose the latter option, you can specify a table of pressure jump and volumetric flow rate values. You can place a fan boundary condition on a surface boundary between the fluid domain and the exterior environment. Intake fans require a stagnation inlet, while exhaust fans require a pressure outlet. If you want to simulate the effects of a fan inside the fluid domain without the actual geometry in your model, create a fan interface or an internal fan instead. Fan interfaces and internal fans also enable you to simulate the effects of downstream swirl, which fan boundary conditions cannot simulate. You can add a fan interface to a surface in your model, and you can specify any 3D part as an internal fan. For more information about these alternate fan simulation options, see About Fan Interfaces and About Internal Fans. | ||||||||||