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How small should my mesh sizing be?

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Old   February 2, 2013, 16:39
Default How small should my mesh sizing be?
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Samiullah Mahmood
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Hello everyone, I am working on a final year project at university and it is related to the flow of a slurry mixture in a straight pipe. I was just wondering how small should my mesh sizing be? We have no guidance as to how small or where to start from?

From what I understand I should keep reducing the mesh size until there is less than 2% difference between the head loss after running the solutions....but I just don't know where to start the mesh sizing from and how to justify using that figure.

Any help would be much appreciated.


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Old   February 3, 2013, 05:06
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As the simulation result would not change by refining mesh.
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Old   February 7, 2013, 01:26
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It is always reccomended to do a Grid Independance Study for any simulations.
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Old   February 7, 2013, 07:56
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Hi Sami,

If you are asking about the starting ...

according to the model that you use:

1- the recommended range of wall Y+ will help you to estimate the first mesh size.
2- play on the range of mesh size incremental ratio keeping the first cell size.

read more about your model.


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