Search found 230 matches

by Luciano Garelli
Mon Jun 24, 2019 12:38 pm
Forum: Code_Saturne usage
Topic: Set listing verbosity options
Replies: 1
Views: 574

Re: Set listing verbosity options

Hello,

In order to reduce the size of the listing file you can try modifying the verbosity level with the variable iwarni or changing the output frequency with the variable ntlist or change it in the GUI in Output control -> log frequency.

Regards,

Luciano
by Luciano Garelli
Wed Jun 19, 2019 8:27 pm
Forum: Code_Saturne usage
Topic: Volume of Fluid (VOF) CS6.0_beta
Replies: 3
Views: 672

Re: Volume of Fluid (VOF) CS6.0_beta

Hello,

You have to set using user functions and you don't need to recompile CS. When you add an user function in the SRC directory it is compile when you launch CS.

You can check in the listing if VOF is activated.

Regards,

Luciano
by Luciano Garelli
Wed Jun 19, 2019 2:26 pm
Forum: Code_Saturne usage
Topic: Volume of Fluid (VOF) CS6.0_beta
Replies: 3
Views: 672

Re: Volume of Fluid (VOF) CS6.0_beta

Hello,

To activate VOF you have to set the variable ivofmt = 0 using the cs_user_parameters.f90 routine and the void fraction is store in the ivolf2 array.

Additionally, you can check this post

https://github.com/code-saturne/code_saturne/issues/28

Regards,

Luciano
by Luciano Garelli
Wed Jun 12, 2019 1:37 pm
Forum: Code_Saturne usage
Topic: ALE calculation suddenly stopping with no error
Replies: 3
Views: 813

Re: ALE calculation suddenly stopping with no error

Hello,

Could you post the listing and some additional information about the case?

Regards,

Luciano
by Luciano Garelli
Mon Jun 03, 2019 12:36 pm
Forum: Code_Saturne usage
Topic: Wall_shear_stress_from_post_util
Replies: 4
Views: 860

Re: Wall_shear_stress_from_post_util

Hello,

In the file cs_user_extra_operations-global_efforts.f90 there is an exmple how to compute global efforts on a subset of faces. Did you check it?

Regards,

Luciano
by Luciano Garelli
Fri May 31, 2019 1:15 pm
Forum: Code_Saturne usage
Topic: VOF and ALE compatible?
Replies: 3
Views: 468

Re: VOF and ALE compatible?

Hello,

VOF and ALE can be used simultaneously. I did some test with a wave generator.

Be careful with the version that you are using becouse were a bug fixed in the ALE Bc (commit 4b879fa).

Regards,

Luciano
by Luciano Garelli
Wed May 22, 2019 3:53 pm
Forum: Code_Saturne usage
Topic: FSI internal coupling and sub-iterations
Replies: 2
Views: 400

Re: FSI internal coupling and sub-iterations

Hello, The coefficient cfopre is used to predict the forces at time (n+1), not to relax them. In modini.f90 is set cfopre = 2.0d0, then in strini.f90 is modified in case of nalimx>1 else if (nbstru.gt.0) then if (nalimx.eq.1) then write(nfecra,2020) aexxst, bexxst, cfopre else cfopre = 1.d0 write(nf...
by Luciano Garelli
Mon May 20, 2019 5:32 pm
Forum: Code_Saturne usage
Topic: Newmark-HHT algorithm in Code_Saturne
Replies: 9
Views: 651

Re: Newmark-HHT algorithm in Code_Saturne

Hello, I don't known what kind of FSI problem are you solving. The time integration is implemented like in the paper "Improved Numerical Dissipation for Time Integration Algorithms in Structural Dynamics, Hilber, H.M, Hughes,T.J.R and Talor, R.L." . The change in the parameters will modify the behav...
by Luciano Garelli
Mon May 20, 2019 4:27 pm
Forum: Code_Saturne usage
Topic: Newmark-HHT algorithm in Code_Saturne
Replies: 9
Views: 651

Re: Newmark-HHT algorithm in Code_Saturne

Hello,

To what specific set of values do you refer? alpnmk, betnmk, gamnmk?

Regards,

Luciano
by Luciano Garelli
Mon May 20, 2019 3:09 pm
Forum: Code_Saturne usage
Topic: Newmark-HHT algorithm in Code_Saturne
Replies: 9
Views: 651

Re: Newmark-HHT algorithm in Code_Saturne

The parameter alpnmk is initialized in iniini.f90 and the paremeters betnmk and gamnmk a defined in modini.f90. I think that you can copy the newmrk.f90 or strdep.f90 to the SRC directory and change the values. I don't known if the values of the alpnmk, betnmk, gamnmk can be accessed from another us...