hi,

i want to model electric field on particles. In my case because of field particles attain constant velocity, which will be equal to electrophoretic mobility*electric field. Can any one tell me how to do it.

thanks,

Srinivas

There is an electromagnetic module available as an addon to fluent . check if it available with your fluent version. Otherwise learn how to include udf functions and you got to add the effect of the field through the udf.

-H

[akbar]

can any body help me for simulate electrical field in fluent ?
please contact me with akbariakbar10@yahoo.com
thanks

[rubis]

hi ,
can you activate a electric field in fluent if you use MHD model.

yours

[Payam89]

Hi Dear

Which version of FLUENT does have MHD addon modules ?

thanks

[vsmkrm298]

Hi
I dont know about the fluent modules, but i solved the similar problem.
U can get the electric field by solving the poissons equation for applied or induced potential. This u need to do by defining a udf. So, now u can take the derivative of potential to get electric field in both directions.

[Payam89]

thanks you very much

Do you still have your UDF to help me during my job?

many thanks

[vsmkrm298]

ya, i have that udf so that i can help you

[liuzexiang]

Originally Posted by vsmkrm298

Hi
I dont know about the fluent modules, but i solved the similar problem.
U can get the electric field by solving the poissons equation for applied or induced potential. This u need to do by defining a udf. So, now u can take the derivative of potential to get electric field in both directions.

which edition! can u supply some message?

[ambrish4u]

for the applying mhd, which type of geometry should b prepared.....
means, is we hv to make some special geometrical part for that ?????
please help me out....thnks

[vsmkrm298]

i cant understand what u are asking

[ambrish4u]

actually i have to apply electromagnetic field rectangular duct, but at a particular region....so for that i have make any different volume at that region

for example i have attached the pic....

[Payam89]

Originally Posted by ambrish4u

actually i have to apply electromagnetic field rectangular duct, but at a particular region....so for that i have make any different volume at that region

for example i have attached the pic....

In which part exactly do you want to apply electromagnetic field?

[ambrish4u]

as i hv shown in the figure, i.e. in a duct of 50 cm of length i have to apply electromagnetic field with stirring effect within 10 cm in between.

thanks....

[Payam89]

After you active MHD panel.you should first select 2 face and then put on voltage to to each face.then you run and it will show you electric field...but if you have magnetic field it doesn't need any iteration.

[ambrish4u]

Originally Posted by Payam89

After you active MHD panel.you should first select 2 face and then put on voltage to to each face.then you run and it will show you electric field...but if you have magnetic field it doesn't need any iteration.

@ Payam89
thanks 4 ur reply....
since i hv to apply mhd in some area....so do i hv 2 make some geometry of that area...
because when i m applying mhd, result comes for complete area....or there is any other way for that....

[Payam89]

how can it understand in which area you are going to apply electric field....you should tell him!

you need to apply 2 faces

[ambrish4u]

Originally Posted by Payam89

how can it understand in which area you are going to apply electric field....you should tell him!

you need to apply 2 faces

@Payam89
yes u r right but it always ask only for the zone(i.e. fluid or solid).... not for any plane or wall...
thanks...

[aestas]

I had worked on MHD before and i change the software to OpenFOAM...

[upc]

Originally Posted by vsmkrm298

ya, i have that udf so that i can help you

Hi, I am working on electric field coalescence with fluent. Could you please send me you udf on electric field as well? Thank you very much!