[Tobi]

Hi all,

maybe I found a bug in the buoyantPimpleFoam solver.

Information:

• small case (2D - wedged)
• closed volume
• T initialized with setFields
• dt = 1e-8
• save date all 1e-8 (so every iteration)

1. Step

• No relaxation factors in fvSolution
• I get 24 iterations
• after that simulation blow up

2. Step

• added relaxation to fvSolution
• After 24 iterations the simulation blow up

3. Step

• relax factors to 0.001
• After 24 iterations the simulation blow up
• Solution in paraview like Step 1 and 2

4. Step

• relax factors changed to 1e5
• After 24 iterations the simulation blow up
• Solution in paraview like 1, 2 and 3

So in my opinion the relaxation factors are not taken into accout because if I set the factors to 1e5 I should never reach the second/third iteration, arent I ?



Additionally I had a look into the code - relaxation is included:

    EEqn.relax();
    pEqn.relax();
    UEqn.relax();

So now the question is, why I get always same solutions if I change the relaxation factors - thats not correct.

If I change the factors in simpleFoam to 100 the simulation blow up at the beginning.


Thanks in advance
Tobi

[Tobi]

Hi all,

sometimes people should go to bed if they are tierd.
The relaxation is working - I just made a mistake in the relaxation declaration with "Final" ...

@Mod - this thread can be deleted.
Thanks for reading and sorry for "spaming"


Regards Tobi