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Turbulent flow through a channel

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Old   November 18, 2019, 16:16
Default Turbulent flow through a channel
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Indu Kant Deo
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is the turbulence in core region of channel flow isotropic?
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Old   November 19, 2019, 02:43
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Originally Posted by Indu Kant Deo View Post
is the turbulence in core region of channel flow isotropic?



This assumption depends also on the Re_tau number, the isotropy is better achieved for high Re numbers
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Old   November 19, 2019, 05:14
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Quote:
Originally Posted by Indu Kant Deo View Post
is the turbulence in core region of channel flow isotropic?
If you take a look at my Ph.D. thesis here:

https://www.politesi.polimi.it/handle/10589/89603

on page 7, Fig. 1.1 a, shows exactly what mentioned by Filippo in terms of turbulence spectra, even if a clear reference to the isotropic one is missing. In practice you see that in the middle of the channel, with increasing Re number, the spectra tend to collapse toward the isotropic one.
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