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[ÇóÖú] ÇóÖúcomsolÀïÃæinterior fan µÄÉèÖÃ

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One side represents a flow inlet; the other side represents the fan outlet. The fan boundary condition ensures that the mass flow rate is conserved between its inlet and outlet:
This boundary condition acts like a Pressure, No Viscous Stress boundary condition on each side of the fan. The pressure at the fan outlet is fixed so that the mass flow rate is conserved. On the fan inlet the pressure is set to the pressure at the fan outlet minus the pressure drop due to the fan. The pressure drop due to the fan is defined by the static pressure curve, which is usually a function of the flow rate. To define a fan boundary condition on an exterior boundary, use the Fan node instead.

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