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.
Model of material that expands with temperature
Posted 2016年12月9日 GMT-5 10:48 Heat Transfer & Phase Change, Geometry, Materials, Mesh, Parameters, Variables, & Functions Version 5.2a 0 Replies
Please login with a confirmed email address before reporting spam
I want to simulate a situation in which a material is wrapped around a cylinder and the whole assembly is placed in a borehole (please see attachment). Due to the increase in temperature, the material (depicted with red) expands and occupies the entire gap.
So the first approach that came in mind was to set a step function with a transition around the expansion point and change the properties of the air with the temperature; from air to the material that expands. It works fine for heating, but when the system cools down, the material is changing its properties to air again, which is what is expected and what I am trying to avoid.
In other words, I want to model a material that expands with temperature and stays expanded after that temperature point. Is there any way that one can set the transition in properties inside the material, by using only the heat transfer module? Does anyone have any suggestion on how to do that?
Paul
Attachments:
Hello Paul Coman
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.