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Lorentz force in MHD module

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Old   April 2, 2010, 16:58
Default Lorentz force in MHD module
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amirbahador
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Hi freinds
On modelling the electric arc with MHD module in Fluent , Lorentz force is not loaded and momentum Eq. isn't solved as a result............Does everyone Knows about the problem ?
Best ragards
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Old   March 2, 2011, 09:25
Default Ansys CFD MHD module instalation
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Hi,

I'm also trying to simulate the electric arc with ansys.
I have the v12.1 and v13 linceses but the programme tells me that I need the MHD module. Do you know how to install it?
Thanks a lot!
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Old   June 23, 2011, 11:20
Post Lorentz force in MHD with B=0
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osis
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hi friends,

I want to have a Lorentz force in the form of F=Eq as a source term in my momentum equations without considering any discrete phase model, the MHD module consider this force just when you have DPM and in other cases consider F=J*B which is not good for me , beacause in my case the magnetic field is zero and i just want to investigate the effect of electric field . what should I do ?

should i start to write another UDF from begining ???

thanks
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Old   August 22, 2011, 03:46
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I also noticed that B fiels is zero even when the solution is converged. I have applied the external B field to the fluid region. Also initialized the MHD model. Why B is still zero?
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Old   October 14, 2012, 13:10
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Heera Lal
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u first need to initialize the general fluid problem ..then initialize the mhd module then apply the field at the last .....
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Old   October 15, 2012, 12:45
Default MHD program
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hello my dear!

I have a magnetic field in my flow and I read a lot of MHD tutorials but I am not able that in which format I should write this in c/c++ ....please if you have a similar c program help me.

regards
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Old   October 15, 2012, 14:53
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Heera Lal
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I am not sure for which thing u want to write the c program . If u have variable magnetic field then i think u can use import mode of field application in mhd module of fluent.
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Old   October 17, 2012, 06:41
Default modeling AC magnetic field and constant current
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ali m
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hello ,
i want to simulate lorentz force that applied to mercury under AC magnetic field and a constant electric current with FLUENT,
please help me ASAP
thanks
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Old   October 24, 2012, 02:36
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Quote:
Originally Posted by ali_mehrabi69 View Post
hello ,
i want to simulate lorentz force that applied to mercury under AC magnetic field and a constant electric current with FLUENT,
please help me ASAP
thanks
For modeling MHD , you need to use UDF files + MHD option in Ansys Fluent , ofc it's much more easier in Ansys 12 - 14
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Old   October 27, 2012, 13:57
Default Mhd
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I'm going to add a electric field which has a function like E=(q/2*pi*e)(1/x) to fluent.I'm going to use c program for it.
Do you have similar program or how should I build this function?

do you have udf.h library source link?

many thanks
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Old   October 27, 2012, 13:59
Default mhd
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Quote:
Originally Posted by Heera Lal View Post
I am not sure for which thing u want to write the c program . If u have variable magnetic field then i think u can use import mode of field application in mhd module of fluent.
I'm going to add a electric field which has a function like E=(q/2*pi*e)(1/x) to fluent.I'm going to use c program for it.
Do you have similar program or how should I build this function?

do you have udf.h library source link?

many thanks
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Old   December 1, 2014, 12:02
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Lei Gao
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Quote:
Originally Posted by ekhilore View Post
Hi,

I'm also trying to simulate the electric arc with ansys.
I have the v12.1 and v13 linceses but the programme tells me that I need the MHD module. Do you know how to install it?
Thanks a lot!
Hi ekhilore:
MHD is a hidden application inside the Fluent. If you already have the Fluent, you can call it from TUI order. To know more, you can search MHD tutorial.
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Old   May 31, 2015, 07:37
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Marya A
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Quote:
Originally Posted by Payam89 View Post
hello my dear!

I have a magnetic field in my flow and I read a lot of MHD tutorials but I am not able that in which format I should write this in c/c++ ....please if you have a similar c program help me.

regards

May I ask you to send me MHD tutorials? I am searching for some MHD tutorials but I cant find any
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