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How to set a maximum temperature?

Posted 14.10.2021, 15:51 GMT-4 Heat Transfer Version 5.6 1 Reply

Omid Oveisi Oskouei
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Hi,

In heat transfers of solids, the laser is heating the material, but the problem is that the temperature reaches above the evaporation temperature, which is not sufficient and good for my results, I want to introduce a maximum temperature which the material can not go higher than this temperature. Any ideas or tipps that I can use in order to do that?

Best Regards Omid

1 Reply Last Post 31.10.2021, 22:28 GMT-4
Amin Kazemi Postdoctoral Researcher, University of Toronto
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Posted: 3 years ago 31.10.2021, 22:28 GMT-4
Updated: 3 years ago 31.10.2021, 22:35 GMT-4

I recommend you consider the real physic. In th heat Transfer module, right click on the solid node and select "Phase Change".

There you can set latent heat, phase change temperature, etc. Phase change requires a considerable amount of heat which leads to a slight change in the temperature of the system. This is for melting, which occures in the volume. If you want to impose an evaporation cooling, just add a negative heat flux at the boundary where evaporation takes place, since evaporation is a surface phenomenon.

Anyways, if you still need to set a cap on the temperature, I'm not sure how to do that. However, you may try something like: min(T,1000[K]). This ensures that the temperature is always below 1000K.

Hope this helps you.

Amin

I recommend you consider the real physic. In th heat Transfer module, right click on the solid node and select "Phase Change". There you can set latent heat, phase change temperature, etc. Phase change requires a considerable amount of heat which leads to a slight change in the temperature of the system. This is for melting, which occures in the volume. If you want to impose an evaporation cooling, just add a negative heat flux at the boundary where evaporation takes place, since evaporation is a surface phenomenon. Anyways, if you still need to set a cap on the temperature, I'm not sure how to do that. However, you may try something like: min(T,1000[K]). This ensures that the temperature is always below 1000K. Hope this helps you. Amin

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