Ivar KJELBERG
COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted:
1 decade ago
28 set 2012, 14:58 GMT-4
Hi
there are already a few examples either in the model library, or in the model exchange, and / or Forum, try some searches. Also several articles from the confs
--
Good luck
Ivar
Hi
there are already a few examples either in the model library, or in the model exchange, and / or Forum, try some searches. Also several articles from the confs
--
Good luck
Ivar
Nagi Elabbasi
Facebook Reality Labs
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Posted:
1 decade ago
28 set 2012, 14:59 GMT-4
You can define a Gaussian pulse as a COMSOL function, then apply a boundary heat source over the whole surface that the pulse moves over. For the magnitude of the heat source put an analytical expression to define the moving pulse. For example if the pulse is moving in the X-direction, your expression can be something like gp1(x-k*t) where gp1 is the name of the Gaussian pulse and k is the speed of the pulse.
Nagi Elabbasi
Veryst Engineering
You can define a Gaussian pulse as a COMSOL function, then apply a boundary heat source over the whole surface that the pulse moves over. For the magnitude of the heat source put an analytical expression to define the moving pulse. For example if the pulse is moving in the X-direction, your expression can be something like gp1(x-k*t) where gp1 is the name of the Gaussian pulse and k is the speed of the pulse.
Nagi Elabbasi
Veryst Engineering
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Posted:
1 decade ago
19 feb 2014, 02:45 GMT-5
Hi all, I have a problem in relation with this.
I am doing what you say an the behaviour is correct but the heating is not enought. I mean, when I introduce the gp1(x-v*t)*400[W] in the power option, the material does not reach the expected temperature; and I think that it is related with the definition, my model is a 2D model and the power is divided by an area and I dont know what's the meaning of this area "A". If I suppose that this area is the selected boundary(0.3m) multiplied by 1m, the value I should multiply by the power makes it smaller and thisproduces a small temperature value.
what's happening!?!?!
thanks a lot.
Hi all, I have a problem in relation with this.
I am doing what you say an the behaviour is correct but the heating is not enought. I mean, when I introduce the gp1(x-v*t)*400[W] in the power option, the material does not reach the expected temperature; and I think that it is related with the definition, my model is a 2D model and the power is divided by an area and I dont know what's the meaning of this area "A". If I suppose that this area is the selected boundary(0.3m) multiplied by 1m, the value I should multiply by the power makes it smaller and thisproduces a small temperature value.
what's happening!?!?!
thanks a lot.
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Posted:
10 years ago
30 ott 2014, 02:06 GMT-4
Hi Kurian
As Ivar said, I think you can check out the gallery:
www.comsol.com/model/laser-heating-a-self-guided-tutorial-12317
also there is a paper:
www.comsol.com/paper/download/63243/poulain_paper.pdf
I am also working on laser processing. Nice meeting you!
Letian
Hi
I need to model a moving laser Gaussian heat flux over a surface and i want to know the temperature and time.
kurian
Hi Kurian
As Ivar said, I think you can check out the gallery: http://www.comsol.com/model/laser-heating-a-self-guided-tutorial-12317
also there is a paper: http://www.comsol.com/paper/download/63243/poulain_paper.pdf
I am also working on laser processing. Nice meeting you!
Letian
[QUOTE]
Hi
I need to model a moving laser Gaussian heat flux over a surface and i want to know the temperature and time.
kurian
[/QUOTE]
Walter Frei
COMSOL Employee
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Posted:
9 years ago
5 gen 2016, 08:37 GMT-5
For the general topic of laser heating as you're describing here, please also see:
http://www.comsol.com/model/13835
http://www.comsol.com/blogs/modeling-laser-material-interactions-in-comsol-multiphysics
http://www.comsol.com/blogs/modeling-laser-material-interactions-with-the-beer-lambert-law
http://www.comsol.com/blogs/tracking-material-damage-with-the-previous-solution-operator
http://www.comsol.com/blogs/modeling-a-periodic-heat-load
http://www.comsol.com/blogs/implementing-simple-temperature-controller-component-coupling