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-   -   Do successfully worked MHD module examples exist? (http://www.cfd-online.com/Forums/fluent/110370-do-successfully-worked-mhd-module-examples-exist.html)

Peterpanza December 10, 2012 02:05

Do successfully worked MHD module examples exist?
 
I tried to simulate the plasma arc welding process, I found MHD module iperfectly suits my need, but haven't worked out anything yet, all the variables in user defined memory are zeroes.

:confused:

I would be very very grateful if anyone can share a successfully worked MHD module example

nasser January 20, 2013 11:08

Quote:

Originally Posted by Peterpanza (Post 396579)
I tried to simulate the plasma arc welding process, I found MHD module iperfectly suits my need, but haven't worked out anything yet, all the variables in user defined memory are zeroes.

:confused:

I would be very very grateful if anyone can share a successfully worked MHD module example


hi friends
I have the same problem , do you solve it ?

Peterpanza January 20, 2013 21:30

Quote:

Originally Posted by nasser (Post 402949)
hi friends
I have the same problem , do you solve it ?

yeah,i had ,or i should say I hadn't
cause it just can not solve that kind of problem.:mad:
Now I am trying to solve it in old way with UDF and UDS,luckily,it is a 2-D module.:D

Peterpanza January 20, 2013 21:34

Quote:

Originally Posted by nasser (Post 402949)
hi friends
I have the same problem , do you solve it ?

well, I mean i need it to work in this way:
put a current in the middle, and it generates a magnetic field,then put the Lorenzo force in the momentum equations as source term.
Maybe it can do that, but I failed to discover how

Yanlong Li January 21, 2013 11:22

Did you use VOF model together?

Peterpanza January 22, 2013 02:47

Quote:

Originally Posted by Yanlong Li (Post 403142)
Did you use VOF model together?

Sorry pal,i dont need VOF to solve my problem, it is only a single phase problem

nasser January 22, 2013 02:58

hi friends
I think I can use MHD in my model but I dont Know about Accuracy of it.

Peterpanza January 22, 2013 03:13

Quote:

Originally Posted by nasser (Post 403246)
hi friends
I think I can use MHD in my model but I dont Know about Accuracy of it.

Do you have induced magnetic field in your model?

nasser January 22, 2013 05:32

Quote:

Originally Posted by Peterpanza (Post 403248)
Do you have induced magnetic field in your model?

yes , I induce magnetic field in my model and it worked .

Peterpanza January 22, 2013 06:37

Quote:

Originally Posted by nasser (Post 403262)
yes , I induce magnetic field in my model and it worked .

Do you mean you have a existing current,which is intended to induce a magnetic field?
May I know your model in detail?

violin January 26, 2013 12:29

[QUOTE=Peterpanza;4a current to induce a magnetic field !

nasser January 26, 2013 12:38

Quote:

Originally Posted by Peterpanza (Post 403269)
Do you mean you have a existing current,which is intended to induce a magnetic field?
May I know your model in detail?

No , I only have magnetic field . fluent cant model a current to induce a magnetic field .

Peterpanza January 27, 2013 21:25

Quote:

Originally Posted by nasser (Post 404208)
No , I only have magnetic field . fluent cant model a current to induce a magnetic field .

yeah.....i had spend weeks figured that out. Thx anyway


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