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the pressure coefficient vs angle in CFX??

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Old   November 27, 2009, 19:36
Default the pressure coefficient vs angle in CFX??
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Juan Lorenzo
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Hello to all,

I have studied, with CFX, the problem of flow past a circular cylinder in a uniform stream and I have plotted in XY graphics the pressure coefficient vs position(m).

The questions are:

1) How can I plot, in CFX, the pressure coefficient vs angle?

2) What is the correct form of the expression the pressure coefficient? this is correct?

Coefficient Pressure = (Pressure - RefPressure)/dynHead

dynHead = 0.5 * areaAve(Density)@Surface Cylinder * areaAve(Velocity)@Surface Cylinder^2

3) The pressure is the one that calculates in the surface of the cylinder?

Thanks a lot
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Old   December 14, 2012, 08:31
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I think it should be correct also:

2*(Pressure -areaAve(Pressure)@R1 Inlet)/(areaAve(Density)@R1 Inlet *areaAve(Velocity)@R1 Inlet ^2)

for the plot I cant help you because it is so difficult find information above charts. the problem is that he should have as x or y variable an "some way-averaged quantity" and this is useless for your need.

Im sorry. If you find this answer please reply on this tread!

good work

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