I'm interested in chemical reactions. There's a reaction that only takes place above a certain temperature. I would like to figure out how long a solid material can stay above that temperature under two end-member circumstances (described below).
I am not an engineer, but took basic heat transport a long time ago. I would be very grateful if someone would point me to any software/downloadable code that might be useful for solving my problem. So far I have searched extensively on the Matlab file exchange board, but don't see anything that seems relevant. I don't have access to ANSYS, but would be willing to get access to COMSOL or some other commercial software and figure out how to use it.
I want to know approximately how long it would take for a 2D, rectangular sheet to cool below a certain temperature when:
There is one hot rectangular area in the middle of the sheet (I'm pretty sure I can figure this one out in Matlab), and
When there are multiple hot vertical areas in the sheet (the sheet is "striped" with hot and cold areas). This is the tough one for me that I'd like to solve with already-prepared code.