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March 18, 2013, 17:54 |
Pressure Coefficient around cylinder
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#1 |
Member
Steve Mcharg
Join Date: Mar 2013
Posts: 31
Rep Power: 13 |
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? Cheers |
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March 18, 2013, 20:17 |
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#2 |
Senior Member
Stuart Buckingham
Join Date: May 2010
Location: United Kingdom
Posts: 267
Rep Power: 25 |
Pressure Coefficient greater than 1! You're breaking the laws of physics!
Set your reference values to something appropriate and try again. Stu |
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March 19, 2013, 16:59 |
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#3 |
Member
Steve Mcharg
Join Date: Mar 2013
Posts: 31
Rep Power: 13 |
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. Cheers |
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March 24, 2013, 09:56 |
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#4 |
Member
Steve Mcharg
Join Date: Mar 2013
Posts: 31
Rep Power: 13 |
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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