Search found 23 matches

by lehongduc
Mon Jan 15, 2018 7:15 pm
Forum: Code_Saturne usage
Topic: Hydraulic diameter and turbulence parameter
Replies: 2
Views: 608

Re: Hydraulic diameter and turbulence parameter

Hello,

Thanks a lot for the explanation. :)

Regard,
Hong Duc
by lehongduc
Wed Jan 10, 2018 7:16 pm
Forum: Code_Saturne usage
Topic: Hydraulic diameter and turbulence parameter
Replies: 2
Views: 608

Hydraulic diameter and turbulence parameter

Hello, I have a newbie question about the hydraulic diameter that we choose for the turbulence parameter of the Inlet. I'm using CSv4.0 to simulate a gas flow exiting a pipeline into the air. I use k-epsilon model for the gas turbulence. I can give the initial value for the k and epsilon or I can al...
by lehongduc
Fri Aug 18, 2017 2:46 pm
Forum: Code_Saturne usage
Topic: Periodic boundary conditions for particulate phase
Replies: 2
Views: 1206

Re: Periodic boundary conditions for particulate phase

Hello Yvan,

Thanks for the quick answer. I will take a look at it.

Best regard,
LE Hong Duc
by lehongduc
Thu Aug 17, 2017 9:33 am
Forum: Code_Saturne usage
Topic: Periodic boundary conditions for particulate phase
Replies: 2
Views: 1206

Periodic boundary conditions for particulate phase

Hello, I'm using Code_Saturne v4.0 (I cannot switch to 5.0 because all my development was in lagrangian part of v4.0). I'm developping the modelling of the collision between particles. To validate my development, I need to create a box with periodic boundary conditions for particles for 6 faces of t...
by lehongduc
Fri Dec 09, 2016 1:42 pm
Forum: Code_Saturne usage
Topic: Two-way coupling of Lagrangian particle
Replies: 8
Views: 4139

Re: Two-way coupling of Lagrangian particle

Hello Yvan, I found my "bug". I have to set first order of numerical scheme of particle dispersion model for 2-way coupling. (nordre = 1 in uslag1.f90). I didn't look closer to see what is the probleme with nordre = 2 (maybe some probleme in predvv.f90 for source terme (ligne 16510))... but my case ...
by lehongduc
Tue Dec 06, 2016 1:12 pm
Forum: Code_Saturne usage
Topic: Two-way coupling of Lagrangian particle
Replies: 8
Views: 4139

Re: Two-way coupling of Lagrangian particle

Re,

Thanks very much! I'll take a look at it.

Regard,
LE Hong Duc
by lehongduc
Tue Dec 06, 2016 9:04 am
Forum: Code_Saturne usage
Topic: Two-way coupling of Lagrangian particle
Replies: 8
Views: 4139

Re: Two-way coupling of Lagrangian particle

Hello Yvan,

I'm using CSv4.0.3. It would be nice if you have the validation test case of this version. If not, the validation of another version closest to v4.0.3 could be fine, I will try the same validation test case on v4.0.3.

Thanks in advance,
Best regard,
LE Hong Duc
by lehongduc
Mon Dec 05, 2016 10:45 am
Forum: Code_Saturne usage
Topic: Two-way coupling of Lagrangian particle
Replies: 8
Views: 4139

Re: Two-way coupling of Lagrangian particle

Hello Yvan, Thanks for the reply. I'm using only basic Lagrangian options. Turbulence model is "k-epsilon". The options of 2-way coupling is: nstits = 1, ltsdyn = 1. I tested the integration order of SDE (nordre = 1 or 2), and also the activation or not the dispersion model (idistu = 0 or 1), those ...
by lehongduc
Fri Dec 02, 2016 10:16 am
Forum: Code_Saturne usage
Topic: Two-way coupling of Lagrangian particle
Replies: 8
Views: 4139

Two-way coupling of Lagrangian particle

Hello all, I would like to use two-way coupling of Lagrangian particle in Code_Saturne 4.0.3 but I have an unrealistic value of my results (about fluid velocity). I'm looking for some information about two way coupling of CS and I found a topic about it a year ago: http://code-saturne.org/forum/view...
by lehongduc
Thu Sep 29, 2016 8:34 am
Forum: Discussion
Topic: Lagrangian subroutine _where_are_you
Replies: 2
Views: 2528

Re: Lagrangian subroutine _where_are_you

Hello Yvan,

Thanks you for your reply. I'll take a closer look at this point.

Regard,
Hong Duc