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a little smaller Strouhal number

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Old   March 20, 2014, 08:25
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Dear KKpal and Philiph,

many thanks for your posts. I'm working with the same problem about flow past a circular cylinder. I would like to know to what St number my case is converged. What shall I add in my files to know that?

I am simulating flow around cylinder at Re=100.

my case setup is like this:
D=1, U=1, nu=0.01, no turbulence model.

I'm looking forward your help please
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Old   March 20, 2014, 08:37
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Sorry, I forgot to attach my case in the previous post.
Attached Files
File Type: gz circularCylinderNew.tar.gz (4.8 KB, 6 views)
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Old   March 20, 2014, 08:41
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Maimouna, you need to measure the frequency! Get any value that shows you the frequency, such as pressure at some point, or the force on the cylinder, velocity at some point... and plot this over time. Now you can just calculate Strouhal number. Since D and u=1 the frequency (in Hz) is the Strouhal number in your case.
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Old   March 20, 2014, 09:36
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Many thanks for your prompt reply.

Do you mean that I could get it by using plotOverLine?

Could you explain more please?
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Old   March 25, 2014, 07:44
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I don't know which tool you use (Fluent, Openfoam, CFX, ...).
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Old   March 25, 2014, 07:48
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Many thanks Philipp. I got it. I'm using OpenFOAM tool.
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