code_saturne User's Forum

Hello Yvan, Sorry I do not understand well, so let me check. What I want to do now is Step 1 - make an average velocity field in some way (total 18000 steps, and calculate the average from 6000step to 18000step) Step 2 - Solve scalar transport on the average velocity using URANS. (Here I want to get...

Hello Yvan, Thank you for your quick response. As you said, what I want to do now is to switch PRANS to URNAS before and after restarting. I know this bag does not occur when I used PRANS (or URANS) both before and after restarting. But unfortunately, I had a divergence problem when running URANS fo...

Hello Yvan, Can you test it with these files? At first, flow is solved and get average velocity field by URANS. flow_simple_test.zip Second, the scalar transport is solved on the average velocity field by pseudo-RANS. scalar_simple_test.zip As I said, in the example for scalar transport, all the vel...

Hello all, I'm sorry maybe this is a little bit stupid question. Let's say, when there are three inlet faces of the same shape, and I give a volumic flow rate 13 (m^3/s) in GUI to all three inlet faces. In this case, each face has 13 (m^3/s) volumic flow rate, right? It does not mean the total of th...

Hello Yvan, I faced the same problem in the last post, and I noticed when it occurs. Let's say when the flow simulation is run with Steady RANS to get the average flow field at first, we have a problem if we use unsteady RANS or something different solver after restarting. In that case, the flow bec...

Hello Yvan, For example, I tried the inlet condition with a negative velocity (handled by GUI) and set for scalar by this code: call getfbr('extraction_duct', nlelt, lstelt) do ilelt = 1, nlelt ifac = lstelt(ilelt) itypfb(ifac) = ientre !Neumann B.C for scalar: call field_get_id("scalar1",...

Hello all, I am trying to make a outlet boundary conditions where: - velocity has a negative volumic flow rate (m3/s) - Neumann condition for scalar transport Otherwise, I am also considering another idea instead of the above, - inlet condition with a negative volumic flow rate (m3/s) (This is easy ...

Hello, Actually, I did not solve this problem at that time, and I did not remember correctly how I solved this. I guess I re-installed a few times. Then after that, I did not face this problem. Sorry I cannot give you good answer, but anyway you should provide the info recommended in the installatio...

Hello Yvan, Thank you, it works now. cs_user_boundary_conditions-mapped_inlet.f90 !------------------------------------------------------------------------------- ! Code_Saturne version 6.0.5 ! -------------------------- ! This file is part of Code_Saturne, a general-purpose CFD tool. ! ! Copyright ...

Hello Yvan, Thank you for your reply and your notice, but let me continue Fortran now. I will change it to C. Here is a script. I am also thinking something is overwrapped. cs_user_boundary_conditions-mapped_inlet.f90 !------------------------------------------------------------------------------- !...