[fferroni]

Hello everyone,

I have a question regarding the mhdFoam solver in openFOAM.

In the mhdFoam.c description is says that one cannot set any boundary conditions from \vec{J} or the electric potential. Very well... so:

If one needs to set the boundary conditions that describe a wall as i.e. perfectly conducting or perfectly insulating, then how does one go about it (if at all)?

In an induction based approach (I think this is what mhdFoam is), then a perfectly insulating wall would have the induced magnetic field b = 0, and in a perfectly conducting wall db/dn = 0.

Suggestions?

Thanks,

Francesco

[levka]

for conducting walls apply for B: zeroGradient at the walls + initial cond.
for insulating walls apply for B: B (.. .. ..) at the walls + initial cond.
got it?

[itaniOmar]

Originally Posted by levka

for conducting walls apply for B: zeroGradient at the walls + initial cond.
for insulating walls apply for B: B (.. .. ..) at the walls + initial cond.
got it?

Hello,if u r still active can i ask you further questions regarding the mhdfoam solver?For instance when taking the tutorial if i give a high enough value for B like (0 100 0) the solver doesn't work.Also when i change the properties from 1 to those ocrresponding of a plasma or liquid sodium for my case the solver also doesn't give converging results.It would be greatly appreciated if u can give ur input.

Best regards

[ajnaqvee]

Originally Posted by itaniOmar

Hello,if u r still active can i ask you further questions regarding the mhdfoam solver?For instance when taking the tutorial if i give a high enough value for B like (0 100 0) the solver doesn't work.Also when i change the properties from 1 to those ocrresponding of a plasma or liquid sodium for my case the solver also doesn't give converging results.It would be greatly appreciated if u can give ur input.

Best regards

Did you find some solution to the second question because I am facing the same issue when changing the transport properties from 1 to some other?