Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.
Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Heat Transfer, Joule Heating, 1D Plot Global
Posted 6 feb 2013, 05:00 GMT-5 Heat Transfer & Phase Change Version 4.3a 1 Reply
Please login with a confirmed email address before reporting spam
Hello,
I have a following problem.
I use the module “Joule Heating”, and I want to calculate a resistance in the temperature dependence (“Time Dependent Study”).
How can I display the global temperature dependence of the time in a 1D Plot Global. I also Use the condition “Heat Flux” (qo = h (Text-T)) and also want to illustrate Text-T over the time.
An attempt was made to declare the global variable mod1.T under another name in
“Definition / Variable” to, but it does not work.
The error is as follows:
-Variable: mod1: T
-Global scope:
Variable: mode1.T_test
-Defined as: mod1.T
Failed to evaluate expression.
-Expression: mod1.T_test
-Plot: global1 (Global)
I have a following problem.
I use the module “Joule Heating”, and I want to calculate a resistance in the temperature dependence (“Time Dependent Study”).
How can I display the global temperature dependence of the time in a 1D Plot Global. I also Use the condition “Heat Flux” (qo = h (Text-T)) and also want to illustrate Text-T over the time.
An attempt was made to declare the global variable mod1.T under another name in
“Definition / Variable” to, but it does not work.
The error is as follows:
-Variable: mod1: T
-Global scope:
Variable: mode1.T_test
-Defined as: mod1.T
Failed to evaluate expression.
-Expression: mod1.T_test
-Plot: global1 (Global)
1 Reply Last Post 6 feb 2013, 05:40 GMT-5
Please login with a confirmed email address before reporting spam
Posted:
1 decade ago
Hi
What is a "global temperature ?
In COMSOL the temperature is a "field" its in fact T(x,y,z,t) but the COMSOL convention drops the "(x,y,z,t)"
This is often confusing. to make a variable global you need to integrate it over at least (x,y,z), or whatever applies depending on the dimensions you have used for your model
--
Good luck
Ivar
What is a "global temperature ?
In COMSOL the temperature is a "field" its in fact T(x,y,z,t) but the COMSOL convention drops the "(x,y,z,t)"
This is often confusing. to make a variable global you need to integrate it over at least (x,y,z), or whatever applies depending on the dimensions you have used for your model
--
Good luck
Ivar