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k and omega initial value in 0 directory

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Old   August 5, 2019, 09:24
Default k and omega initial value in 0 directory
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Febrian Akhmad Baehaqi
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Hi guys. I need some help.

Currently I am running a simulation on a UAV MALE and using simpleFoam as the solver. The Reynolds Number is about 2e+06.

I am a bit confused about how I set the initial value of the k and Omega in the 0 directory. When I read the previous forum someone said that the initial value of k and Omega is independent from the solution or the initial value of k and omega does not affect the results. But when I set a different initial value of k and Omega I keep getting different values of Cl and Cd.

I have already tried to compute from this page https://www.cfd-online.com/Wiki/Turb...ary_conditions
But I do not know the turbulence intensity of my flow because the value of root-mean-square of the turbulent velocity fluctuations (u') and k.

I also attach my 0 directory.

I really appreciate all the help from you guys. Thank you very much..
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Old   June 23, 2020, 08:35
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https://www.cfd-online.com/Tools/turbulence.php

use this tool to find your initial values for turbulence properties.

in my case, my simulation results are not sensitive to initial values of turbulence properties. but thats not a generalisation of course.
you need to test your case.
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