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Strouhal Number of a square cylinder not matching

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Old   April 10, 2020, 01:46
Default Strouhal Number of a square cylinder not matching
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Saugat Shrestha
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I trying to do a 2D model of the square cylinder for a Reynolds number of 50000. I am using the K-omega SST model. I have satisfactory results with the drag and lift. However, I am having some discrepancies in Strohaul's Number. I am getting a number of 0.08, whereas the expected number is in the range of 0.12.
Hope you can help.
Thanks in advance.
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Old   April 10, 2020, 04:38
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Drag and lift are not much affected by the resolution but frequency is. A higher frequency requires finer resolution. You need to check if you are using fine enough temporal as well as spatial resolution to resolve the frequency for St of 0.12.

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2d model, square model, strouhal number

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