Search found 68 matches

by attene
Fri Sep 07, 2018 12:24 pm
Forum: code_saturne usage
Topic: Calculation Restart Problems
Replies: 17
Views: 9075

Re: Calculation Restart Problems

Hello, I tried a restart and It may worked but one thing it is not clear: my residual.csv shows the same number of iteration as the first calculation; although the file was written at the end of the restart calcultion. I did two steady simulation: 1) 10 iteration 2-restart) 15 iterations Regards, FA
by attene
Fri Sep 07, 2018 11:23 am
Forum: code_saturne usage
Topic: Initializing turbulent flow
Replies: 4
Views: 3761

Re: Initializing turbulent flow

Hi Martin, Thank you for your answer. In the user guide I can see clearly how k and w are initialize. I still have few doubts though: 1)The expression for the initialization of k (k=1.5(0.02*UREF)^2) is the same of this more generic expression which I found in literature (k=1.5(U*I)^2) ? In this cas...
by attene
Wed Sep 05, 2018 5:21 pm
Forum: code_saturne usage
Topic: Calculation Restart Problems
Replies: 17
Views: 9075

Re: Calculation Restart Problems

Hi Luciano,

Thank you for your explanation!

Regards,

FA
by attene
Wed Sep 05, 2018 4:20 pm
Forum: code_saturne usage
Topic: Calculation Restart Problems
Replies: 17
Views: 9075

Re: Calculation Restart Problems

Hello BruceS, Code Saturne by default sets 4 restarts checkpoints during your simulation, you can change this frequency in "Advanced options" in the "Start/Restart" tab. If your simulation does not reach almost the first checkpoint (1/4 of the whole simulation) the directory &qu...
by attene
Tue Sep 04, 2018 3:10 pm
Forum: code_saturne usage
Topic: Initializing turbulent flow
Replies: 4
Views: 3761

Initializing turbulent flow

Dear all, I am trying to find out the role that this following parameters play on the initialization of the turbulent flow and whether they affect one another. I am using a k-w SST(2 scales model): 1) Reference length in Reference values: Does it play a role in the calculation of the specific dissip...
by attene
Mon Sep 03, 2018 5:08 pm
Forum: code_saturne usage
Topic: frozen rotor e Coriolis Source Terms
Replies: 13
Views: 5128

Re: frozen rotor e Coriolis Source Terms

Hi Yvan,

Thanks!

What do you mean with the following?:

Make sure the surface mesh has an associated writer so it is not ignored.

Do I have to edit or add another writer under Output Control/Writer ?

Regards,

FA
by attene
Mon Sep 03, 2018 3:23 pm
Forum: code_saturne usage
Topic: frozen rotor e Coriolis Source Terms
Replies: 13
Views: 5128

Re: frozen rotor e Coriolis Source Terms

Hi Yvan, Regarding what I would like to find out in Paraview: I think I need to define in Mesh under Output control the boundaries (the three blades in my case) on which to calculate the quantities I want !? Could you please confirm this!? If that is true: What Id I need to impose for boundary faces...
by attene
Mon Sep 03, 2018 11:59 am
Forum: code_saturne usage
Topic: frozen rotor e Coriolis Source Terms
Replies: 13
Views: 5128

Re: frozen rotor e Coriolis Source Terms

Hello, Thanks! I guess that a good post-processing tool like Paraview can also do this job... I am going to explore this possibility a well! On this regard I would have a question regarding the "stress" that code saturne can compute: Does it take into account for both pressure and viscous ...
by attene
Mon Sep 03, 2018 10:29 am
Forum: code_saturne usage
Topic: frozen rotor e Coriolis Source Terms
Replies: 13
Views: 5128

Re: frozen rotor e Coriolis Source Terms

Hello, thank you for your answer! I will try first to calculate the power using cs_post_moment_of_force and start looking on how to implement the other physical quantities I need to calculate. One question regarding the surface boundaries to call through cs_post_moment_of_force corresponding to the ...
by attene
Fri Aug 31, 2018 3:43 pm
Forum: code_saturne usage
Topic: frozen rotor e Coriolis Source Terms
Replies: 13
Views: 5128

Re: frozen rotor e Coriolis Source Terms

Hello, I think the following part is what suits my needs, but I do need to change something to calculate the Thrust and both the in-plane and out-of plane bending moments acting on the blades. I was wondering whether there is any other specific function like cs_post_moment_of_force to do that or I n...