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Defining time dependent heat flux
Posted Feb 6, 2017, 8:05 a.m. EST Heat Transfer & Phase Change Version 5.2 4 Replies
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Hi all,
In my model, of moving heat load, i want to see the effect of heating as well as cooling on specimen.
for this i want to define heating and cooling time separately in the same simulation, how i should write conditional statement.
Thank you.
In my model, of moving heat load, i want to see the effect of heating as well as cooling on specimen.
for this i want to define heating and cooling time separately in the same simulation, how i should write conditional statement.
Thank you.
4 Replies Last Post Feb 9, 2017, 4:39 a.m. EST
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Posted:
8 years ago
If you are using convective heat flux.. and changing ambient temperature. then you can use ambient temperature as a step function or else type this expression in ambient temperature field . if(t<heatingtime, T_hot, T_cold).
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Posted:
8 years ago
Thank you for your quick reply.
In the model, I am applying a heat source which is moving with certain velocity and heating the specimen, when i am defining the time study the heat source is running for the defined time and by that time only heating is happening which i don't want. I want to stop the heat source functioning after certain time to diffuse the heat. for this i have to define heating time and cooling time in same simulation.
In the model, I am applying a heat source which is moving with certain velocity and heating the specimen, when i am defining the time study the heat source is running for the defined time and by that time only heating is happening which i don't want. I want to stop the heat source functioning after certain time to diffuse the heat. for this i have to define heating time and cooling time in same simulation.
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Posted:
8 years ago
Hi,
Maybe this blog post will give you some ideas:
www.comsol.se/blogs/how-to-make-boundary-conditions-conditional-in-your-simulation/
Regards,
Henrik
Maybe this blog post will give you some ideas:
www.comsol.se/blogs/how-to-make-boundary-conditions-conditional-in-your-simulation/
Regards,
Henrik
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Posted:
8 years ago
Thank you for your response.
Regards,
Sujit
Regards,
Sujit