Search found 33 matches

by leguichet
Mon May 07, 2018 5:29 am
Forum: Code_Saturne usage
Topic: Water hammer simulation
Replies: 0
Views: 1432

Water hammer simulation

Dear all, I am wondering if code saturne can handle the water hammer simulation, since generally the incompressible flow solver neglects the pressure variation. I am aware of the compressible flow solver built in Code Saturne since the V4. I am quite curious if it can capture the pressure wave in th...
by leguichet
Thu Mar 08, 2018 5:09 pm
Forum: Code_Saturne usage
Topic: How to enable clipping of pressure and velocity in CS 5
Replies: 3
Views: 611

Re: How to enable clipping of pressure and velocity in CS 5

Hello Yvan, In the commercial software such as FLUENT, they automatically re-set the "too large" values of the velocity and turbulence scalars like k or epsilon, when the mesh quality is not as high as we wish, to facilitate the convergence of the solution. Is that possible to do the clipping for k-...
by leguichet
Thu Mar 08, 2018 5:01 pm
Forum: Syrthes related questions
Topic: Proposition for improvement of restart function
Replies: 1
Views: 758

Proposition for improvement of restart function

Dear all, I am new user of Syrthes to simulate the heating process in a furnace. It is aimed to study the temperature evolution of a cold load introduced in an already heated furnace. So I started a simulation to obtained a steady solution where the furnace and loads are all hot. Then I restart a se...
by leguichet
Sat Nov 11, 2017 9:43 am
Forum: Code_Saturne usage
Topic: How many process can I run on this machine?
Replies: 12
Views: 1610

Re: How many process can I run on this machine?

Thank you Luciano. It is very helpful. Hello, Each one of yours CPU's has 10 physical cores and hyperthreading. As Yvan mention you will get the best scalability using Number of processes 20 Threads per process 1 or Number of processes 10 Threads per process 2 Also you can run a smaller case and mea...
by leguichet
Sat Nov 11, 2017 9:42 am
Forum: Code_Saturne usage
Topic: How to visualize missing boundary conditions
Replies: 8
Views: 953

Re: How to visualize missing boundary conditions

Hello Yvan, Here it is my test case with a relatively small mesh. https://we.tl/hRbKLHzB5r You can download and run it with .xml file. I didn't use any user-defined routine. Firstly, I think that the error may occurs because of the face joining of the turbomachinary rotor and stator interfaces. But ...
by leguichet
Mon Nov 06, 2017 5:02 pm
Forum: Code_Saturne usage
Topic: How to visualize missing boundary conditions
Replies: 8
Views: 953

Re: How to visualize missing boundary conditions

Hello, How to do a simple mesh joining and checking the joining results. In my postprocessing folder, I have JOINING.case joining.geo results.boundary_zone_id RESULTS.case results.geo results.mpi_rank_id Using paraview with JOINING.case, I saw only the faces to be joined during the mesh joining, bef...
by leguichet
Mon Nov 06, 2017 4:59 pm
Forum: Code_Saturne usage
Topic: How to visualize missing boundary conditions
Replies: 8
Views: 953

Re: How to visualize missing boundary conditions

Hello, Here it is the whole log Hello, In most cases, an ERROR postprocessing output is produced to help visualize those faces, but when the error happens at the ordering stage, there is no such output. This error is rare, but has been encountered recently by another person, so I am interested in de...
by leguichet
Mon Nov 06, 2017 4:56 pm
Forum: Code_Saturne usage
Topic: How many process can I run on this machine?
Replies: 12
Views: 1610

Re: How many process can I run on this machine?

Hello, Thank you for your reply. Therefore, I can run with Number of processes 20 Threads per process 2 or Number of processes 40 Threads per process 1 ? My colleague told me that the CPU has 10 cores, each of which has two virtual threads (not two physical threads). I am wondering if it is true? Wh...
by leguichet
Mon Nov 06, 2017 9:21 am
Forum: Code_Saturne usage
Topic: How many process can I run on this machine?
Replies: 12
Views: 1610

Re: How many process can I run on this machine?

Hello lscpu gives Architecture : x86_64 Mode(s) opératoire(s) des processeurs : 32-bit, 64-bit Boutisme : Little Endian Processeur(s) : 40 Liste de processeur(s) en ligne : 0-39 Thread(s) par cœur : 2 Cœur(s) par socket : 10 Socket(s) : 2 Nœud(s) NUMA : 2 Identifiant constructeur : GenuineIntel Fami...
by leguichet
Tue Oct 31, 2017 6:54 pm
Forum: Code_Saturne usage
Topic: How to visualize missing boundary conditions
Replies: 8
Views: 953

How to visualize missing boundary conditions

Hello everyone, I am using CS 5.0.4 to run a turbomachinary simulation. The interface between the rotor and stator treated correctly. However, when I separated the stator into several mesh files, to include some porous media model, I got some boundary conditions missing: @@@@@@@@@@@@@@@@@@@@@@@@@@@@...