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Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

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Help me please! how to draw the magnetic field lines in 3D, as

Posted 2012年12月2日 GMT-5 18:54 Results & Visualization Version 4.3a 8 Replies

Dima Ilchen
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Hi all!
I need to add the magnetic field lines (and possibly add metal bars between the head and emitter) to the model 2190 Absorbed Radiation (SAR) in the Human Brain.
PS Since I'm a beginner, then I ask (if possible) to provide input data for example.

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8 Replies Last Post 2014年5月18日 GMT-4 21:33
Sergei Yushanov Certified Consultant
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Posted: 1 decade ago 2012年12月3日 GMT-5 09:58
Dima,

Use the following steps to create magnetic stream lines:

1. Results>3D Plot Group
2. 3D Plot Group 1>Streamline
3. In the expression to plot, define Magnetic flux density vector {Bx,By,Bz}, or Magnetic field vector {Hx,Hy,Hz}
4. In the Streamline Positioning section, adjust streamline parameters to get nice plot for magnetic field lines

Good luck,

Sergei Yushanov
Dima, Use the following steps to create magnetic stream lines: 1. Results>3D Plot Group 2. 3D Plot Group 1>Streamline 3. In the expression to plot, define Magnetic flux density vector {Bx,By,Bz}, or Magnetic field vector {Hx,Hy,Hz} 4. In the Streamline Positioning section, adjust streamline parameters to get nice plot for magnetic field lines Good luck, Sergei Yushanov
Dima Ilchen
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Posted: 1 decade ago 2012年12月3日 GMT-5 18:09
Thank you!
But I've done it before. And the result was not granted me.
Maybe I'm doing something wrong?
Thank you! But I've done it before. And the result was not granted me. Maybe I'm doing something wrong?

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Ralf Tschiesche
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Posted: 1 decade ago 2012年12月4日 GMT-5 02:36
Hi!

Something like this? You can play a lot with 3D plots ;-)

Ralf
Hi! Something like this? You can play a lot with 3D plots ;-) Ralf
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年12月4日 GMT-5 02:47
Hi
You must define a region (boundary) from where COMSOL should seed the generate of the streamlines, typically some place close to your source. Or you select the Uniform density streamline

--
Good luck
Ivar
Hi You must define a region (boundary) from where COMSOL should seed the generate of the streamlines, typically some place close to your source. Or you select the Uniform density streamline -- Good luck Ivar
Dima Ilchen
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Posted: 1 decade ago 2012年12月4日 GMT-5 17:11

Hi!

Something like this? You can play a lot with 3D plots ;-)

Ralf


Hi!
Yes I want that! But somehow nothing is drawn. =(
In the graphics tab - empty!
[QUOTE] Hi! Something like this? You can play a lot with 3D plots ;-) Ralf [/QUOTE] Hi! Yes I want that! But somehow nothing is drawn. =( In the graphics tab - empty!

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Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 2012年12月5日 GMT-5 01:33
Hi

check the sub nodes of your plot, something is not set-up correctly, or you are not pointing to the right data set, there can be many things.

Have you gone through the doc to understand what the different tab and entries do ? usually the most important are coming first (on the top)

--
Good luck
Ivar
Hi check the sub nodes of your plot, something is not set-up correctly, or you are not pointing to the right data set, there can be many things. Have you gone through the doc to understand what the different tab and entries do ? usually the most important are coming first (on the top) -- Good luck Ivar
Ralf Tschiesche
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Posted: 1 decade ago 2012年12月5日 GMT-5 05:25
Hi!

I have cleared the solution to get a small file...you only have to re-run the simulation.

Ralf
Hi! I have cleared the solution to get a small file...you only have to re-run the simulation. Ralf
Shan Huang
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Posted: 1 decade ago 2014年5月18日 GMT-4 21:33


Hi!

Something like this? You can play a lot with 3D plots ;-)

Ralf


Hi!
Yes I want that! But somehow nothing is drawn. =(
In the graphics tab - empty!


hi, this happened to me too, how did you fix it?
[QUOTE] [QUOTE] Hi! Something like this? You can play a lot with 3D plots ;-) Ralf [/QUOTE] Hi! Yes I want that! But somehow nothing is drawn. =( In the graphics tab - empty! [/QUOTE] hi, this happened to me too, how did you fix it?

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