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Boundary condition of Pressure Far Field

In Fluent, the Pressure Far Field boundary condition is used to model free flows far from solid boundaries. This boundary condition can be used only if the density is calculated using the ideal gas law, and can not be used in other flows. For accurate calculations, it is necessary that the Far Field pressure bar is sufficiently distant from the object, for example, to calculate the lift force in an airfoil, use a circle as a pressure condition Far field with a radius of 20 times the airfoil’s chord. The Pressure Far Field panel opens from the Boundary Condition.

To determine the static pressure and temperature values in the Pressure Far Field panel, you must enter the appropriate values in the Temperature Gauge Pressure. The Mach number should also be entered in this section. Determining the direction of flow is the same as other frontiers.

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