software: CFD POST ANSYS
menu bar, select Tools > Macro Calculator.
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correction:
Ref pressure is relative pressure = abs pressure - reference pressure (in Fluent)
definitions;
Cp expression can be defined
as:
(Pressure - $pref [Pa])/dynHead
Pressure: static pressure
- $pref ： the Ref. Pressure set in the macro calculator
- dynHead ： a reference dynamic head (evaluated at the inlet) that can be defined as:
0.5 * areaAve(Density)@inlet * areaAve(Velocity)@inlet^2
- dynHead is a reference dynamic head
The following information must be specified:
• Boundary List: A list of boundaries used in the simulation (blade).
• Slice Normal: The axis that will be normal to the slice plane.
• Slice Position: The offset of the slice plane in the direction specified by the normal axis.
• Inlet Region: The locator used to calculate inlet quantities.
• Ref. Pressure: The reference pressure for the simulation.
• Plot Axis: The axis on which the results will be plotted.
pressure coeffcient of a wing/blade
原文：https://www.cnblogs.com/code-saturne/p/10809985.html