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Simulating a Magneto-caloric effect in Comsol
Posted Feb 15, 2013, 5:22 a.m. EST Geometry, Materials, Parameters, Variables, & Functions Version 4.3a 1 Reply
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I have a problem in which i have a permanent magnet. In regards to theory of Magneto-caloric effect, if i pass the magnetic field to the gadolinium(rare earth, lanthanide group in periodic table), there will be an increase of temperature(in Gd) due to magneto-caloric effect and when i remove the magnetic field from the Gadolinium, the temperature decreases and drop below the room temperature. My questions are:
1) I can able to create a block of Gd using the Gd's physical property but how to create a block of permanent magnet in Comsol?
2) Do i need to use a step/ramp function when i want to increase or decrease the temperature in the Gd, due to MCE?
Please advise and thanks in advance.
1) I can able to create a block of Gd using the Gd's physical property but how to create a block of permanent magnet in Comsol?
2) Do i need to use a step/ramp function when i want to increase or decrease the temperature in the Gd, due to MCE?
Please advise and thanks in advance.
1 Reply Last Post Feb 15, 2013, 2:22 p.m. EST
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Posted:
1 decade ago
Hi
I'm not familiar with that phenomeny, but you need to add some equations to transform the magnetic field into the related thermal effect. Currently I know only Joule heating from Eddy current induction of a moving object in a magnetic field (or an immobile object in a changing field).
It's not only some material properties, its also some "physics" correction to add any aditional coupling
--
Good luck
Ivar
I'm not familiar with that phenomeny, but you need to add some equations to transform the magnetic field into the related thermal effect. Currently I know only Joule heating from Eddy current induction of a moving object in a magnetic field (or an immobile object in a changing field).
It's not only some material properties, its also some "physics" correction to add any aditional coupling
--
Good luck
Ivar