I am using a transient thermal modelling but I am getting negative -273C on some surfaces despite I am setting the temperature to 25C for example? what I am doing wrong?
A common issue I see in transient thermal analysis is that the initial temperature is only applied to the outside faces of the model. Since the analysis cannot handle null values applied at any of the nodes it would apply 0 Kelvin temperatures to all the interior volume of the model to try to proceed. Check you initial temperature definition and make sure it is selecting the bodies of the model (you made need to use the 'body' selection filter if this is a part or multi-body part) and not just faces.
Thanks for the advice which solved the problem. I have set the initial temperature on all bodies and getting the correct temperature.
thanks again for the advice.
Where is this option to select bodies? I didn't need here.
To make a body selection you would either need to go into the 'Solid Bodies' ('Cut List' for sheet metal and weldments models) and select the bodies from that list. Otherwise, you can turn on your selection filter toolbar (press "F5" on your keyboard to do this) and turn on the 'Body' filter from that toolbar () before then selecting the model itself in the graphics display.
Thaks, Ryan. I got it.
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