I'm trying to improve the convergence of my coupled thermal-flow simulation.
Reviewing the log-file I got the information about the Maximum Temperature Change at Element 108059.
So I wanted to know where this change happens and tried to find the element with the Node/Element Info Button. However I got an Alert saying:
"No valid element found with specified selection criteria. An element with the specified label does not exist"
"Note: During the analysis process a number of elements have been created whose labels you may not recognize. To find out more about these elements and the elements they are associated with, please look on file REPF for the phrase 'TMG element'"
"No element renumbering or merging was performed.
Elements created by TMG
Association of boundary elements and CG elements
Analyzer module calculation results
No. of iterations 52 TDmax = 0.000E+00 at element 104366
Minimum temperature = 20.000 at element 104368 Flow_PC
Maximum temperature = 757.688 at element 116196 Flow_PC
Average temperature = 76.928
Summary for thermal elements
Maximum heat balance deviation occurs at element 116343 Flow_PC "
However I can't find none of these Elements inside my model. So what's going on? Where is the element?Am I doing something wrong? How can I avoid the creation of these new elements?
Thank you very much in advance
I also faced the same issue. I tried searching these elements but could not locate them. It seems that the solver/NX creates some elements to carry out the flux calculations or for some other reasons. Had you used "Thermal Coupling" tool to model heat transfer between solid bodies?
thank you for your reply. I'm not working with Thermal Couplings, only Temperature Constraints, as I'm only able to work with the basic license. Simulation with 1.Order discretisation converges nicely, however,with 2. Order, my simulations model has problems to converge the max. delta Temp. A maximum temperature change of 10 degrees does not seem reasonable at all. That's why I wanted to find those elements.
Unfortunately, it seems like there isn't a way to find those elements.