COMSOL Forums: Uniform Magnetic field?

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Uniform Magnetic field?

October 16, 2009, 1:12 pm

Hi everyone, I am wondering how I can generate a uniform magnetic field in Comsol. Basically, I want to simulate a metal particle moving in this uniform field. Now I am thinking put all the particles...

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Re: Uniform Magnetic field?

October 17, 2009, 11:36 am

Hi can you not try out by going to the physics settings of your surrounding subdoman and in the "constitutive relation" select either B=mu0*mur*H+Br or B=mu0*H+mu0*M and define a Br or a M in the...

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Re: Uniform Magnetic field?

October 21, 2009, 10:51 pm

Define the space where your particles will move (e.g. a cube in 3D) and specify the field intensity at the boundaries, that way you don't need to worry about the field sources .

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Re: Uniform Magnetic field?

May 8, 2012, 5:44 am

Setting the field at all boundaries works for creating a uniform field region once you realize that the "Magnetic Field" boundary condition specifies the "tangential" component of the field in absolute...

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Re: Uniform Magnetic field?

April 15, 2013, 12:54 am

Hi, I am using comsol 4.2a. I am trying to simulate the hartmann flow problem. I have two parallel plates and a conducting liquid is flowing through it, in the presence of uniform constant magnetic...

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Re: Uniform Magnetic field?

May 3, 2013, 5:59 am

Hi There are several options, but first of all so you really need MEF and solving for V ? (haven't checked the application though) as its far heavier than MF and often MF is enough at least to debug...

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Re: Uniform Magnetic field?

November 8, 2014, 12:06 pm

Hi Ivar, The method to apply magnetic field is very effective and common in the comsol module cases. I tried to use this method before but the results cannot give me the UNIFORM magnetic field. If I...

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Re: Uniform Magnetic field?

November 8, 2014, 12:16 pm

Hi Juan, I use the method exactly the same with your description. But the magnetic insulation will be overridden, to correct that, I build a bigger sphere outside and force the magnetic insulation...

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Re: Uniform Magnetic field?

November 8, 2014, 12:35 pm

Hi Chris, Good to know that, thank you very much for this trick.:) But I have one more question. If I apply my uniform magnetic on the boundary as the "Magnetic field boundary condition" then I will...

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Re: Uniform Magnetic field?

November 8, 2014, 12:38 pm

Hi Mithlesh, Did you get what you expected? I am also doing the simulation of Hartmannn flow by comsol but I am not sure whether the way I apply the uniform magnetic field is correct or wrong. I...

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Uniform Magnetic field?

October 16, 2009, 7:12 pm

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Re: Uniform Magnetic field?

October 17, 2009, 5:36 pm

Hi can you not try out by going to the physics settings of your surrounding subdoman and in the "constitutive relation" select either B=mu0*mur*H+Br or B=mu0*H+mu0*M and define a Br or a M in the...

View Article

Re: Uniform Magnetic field?

October 22, 2009, 4:51 am

Define the space where your particles will move (e.g. a cube in 3D) and specify the field intensity at the boundaries, that way you don't need to worry about the field sources .

View Article

Re: Uniform Magnetic field?

November 8, 2014, 5:35 pm

View Article

Re: Uniform Magnetic field?

November 8, 2014, 5:38 pm

Hi Mithlesh, Did you get what you expected? I am also doing the simulation of Hartmannn flow by comsol but I am not sure whether the way I apply the uniform magnetic field is correct or wrong. I...

View Article