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Applying magnetic gradients along domain boundaries
Posted Apr 29, 2010, 3:25 a.m. EDT 11 Replies
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Hello,
It seems the only way one generates magnetic gradients is to either use permanent magnets or use the magnetic field generated by magnetizable objects (iron) and placed in constant magnetic field (generally applied to boundaries of the domain where these objects are placed).
Is it possible to generate magnetic gradients along the boundaries of the domain or in a sub-domain?
Also, it seems if one writes H_specified*(y/L), where H_specified is a known value and L is the domain length, for the y component in magnetic field option for all the boundaries of the domain, one obtains a variation in magnetic field, however when one applies the same thought for x-component i.e. H_specified*(x/L) for x component, it fails.
Any suggestions/ideas to generate magnetic gradients without external objects will be very helpful
Thanks!
Asha
It seems the only way one generates magnetic gradients is to either use permanent magnets or use the magnetic field generated by magnetizable objects (iron) and placed in constant magnetic field (generally applied to boundaries of the domain where these objects are placed).
Is it possible to generate magnetic gradients along the boundaries of the domain or in a sub-domain?
Also, it seems if one writes H_specified*(y/L), where H_specified is a known value and L is the domain length, for the y component in magnetic field option for all the boundaries of the domain, one obtains a variation in magnetic field, however when one applies the same thought for x-component i.e. H_specified*(x/L) for x component, it fails.
Any suggestions/ideas to generate magnetic gradients without external objects will be very helpful
Thanks!
Asha
11 Replies Last Post Apr 30, 2010, 4:29 p.m. EDT
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Posted:
1 decade ago
Hi
when I set up a subdomain condition B = mu_zero*H+mu_zero*M and define a M as (MMx*x, MMy*y) I can setup a gradient at will, is it that you want ?
OK for a boudary, its the same (in x and y)
Have fun Comsoling
Ivar
when I set up a subdomain condition B = mu_zero*H+mu_zero*M and define a M as (MMx*x, MMy*y) I can setup a gradient at will, is it that you want ?
OK for a boudary, its the same (in x and y)
Have fun Comsoling
Ivar
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Posted:
1 decade ago
Thanks Ivar. It works perfectly. However I did notice that if I wanted a linear gradient in x and y directions I required placing MMy*y in the x component space and MMx*x in the y component of subdomain M. But yes it works!!
Thanks again.
Thanks again.
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Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
Attachments:
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Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
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Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
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Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
Attachments:
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Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
Attachments:
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Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
Attachments:
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
I wish to see how the particle trajectory around an obstacle varies in the presence of an externally imposed magnetic flux. I am solving the attached model in a step by step fashion. I am solving the magnetic field using magnetostatic module and following it with a
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.
NS module which has additional force per volume terms as defined in the subdomain forces.
The solution is not converging. Could you please tell me the reason for it.