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Pressure Coefficient around cylinder

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Old   March 18, 2013, 17:54
Default Pressure Coefficient around cylinder
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Steve Mcharg
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Guys,

Doing a simple study to compare the Cp values to theta from a published paper.

I have used the same domain size/physical model/similar grid resolution/material and boundary conditions, however I am not getting the same value for Cp to theta.

Basically at the stagnation point (0 Degrees) I am getting a value of nearer 2... where experimental data, and the published paper suggest it should be 1.

I read somewhere that it may be an issue with the domain size.

Any thoughts?

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Old   March 18, 2013, 20:17
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Stuart Buckingham
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Pressure Coefficient greater than 1! You're breaking the laws of physics!

Set your reference values to something appropriate and try again.


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Old   March 19, 2013, 16:59
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Steve Mcharg
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I know.. crazy eh!

Okay thanks Stu, I think my depth/length reference values may be incorrect.

I did manage to improve them slightly with a higher order numerical scheme, but still not right.

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Old   March 24, 2013, 09:56
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Steve Mcharg
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Actually.. do you know what I should use in my reference values for this type of domain (in terms of length, width, depth)? For the length I think I may have references the Cylinder Dia...
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