Comparing smooth and rough walls

Questions and remarks about code_saturne usage
Forum rules
Please read the forum usage recommendations before posting.
Post Reply
asda9786
Posts: 7
Joined: Mon Apr 01, 2019 12:00 pm

Comparing smooth and rough walls

Post by asda9786 »

Hello fellow Code_Saturne users.
I am running a steady state simulation with rough walls and would like to compare it to smooth walls. For my rough walls, I believe i Have met convergence despite what seems to look like a noisy signal. Is there any way to alleviate the noise, maybe by constructing some sort of mean field. Or would maybe running a unsteady simulation be better?
I have attached the velocity field below.
Attachments
Screenshot from 2019-04-01 08-05-15.png
Luciano Garelli
Posts: 280
Joined: Fri Dec 04, 2015 1:42 pm

Re: Comparing smooth and rough walls

Post by Luciano Garelli »

Hello,

I think that you can use an octave or python script to calculate an average value after convergence is reached.

Best Regards,

Luciano
asda9786
Posts: 7
Joined: Mon Apr 01, 2019 12:00 pm

Re: Comparing smooth and rough walls

Post by asda9786 »

Thank you for the reply Luciano. I am currently trying to see if I can get an average value through the software 'paraview'.
If this isn't possible I will try another method. :D
Yvan Fournier
Posts: 4070
Joined: Mon Feb 20, 2012 3:25 pm

Re: Comparing smooth and rough walls

Post by Yvan Fournier »

Hello,

You can also construct a mean field using time averages in Code_Saturne.

You can activate those directly from the GUI.

Regards,

Yvan
Luciano Garelli
Posts: 280
Joined: Fri Dec 04, 2015 1:42 pm

Re: Comparing smooth and rough walls

Post by Luciano Garelli »

Hello,

In paraview you can apply the "Temporal Statistics" filter. it will compute the average, the max and min values or use the time averages in Code_Saturne as Yvan mention.

Best Regards,

Luciano
asda9786
Posts: 7
Joined: Mon Apr 01, 2019 12:00 pm

Re: Comparing smooth and rough walls

Post by asda9786 »

Thank you for the response I will try these techniques out in Code_Saturne and Paraview respectively.
Post Reply