How to solve "temperature limited to 1.000000e+00 in 114 cells on zone 19 in domain 1
Hi all,
I had this problem upon calculation, http://imageshack.com/a/img922/6024/YQOaLW.jpg May I know how to solve this problem? My simulation is about a double pipe cylindrical heat exchanger with constant heat on the surface of the outerpipe. The heat exchanger is only modelled 1/4 to take advantage of the cylindrical symmetry. The water is pumped through the "water-inlet" and allowed to flow to the bottom of heat exchanger and flow back up and exits via "water-outlet". The outer pipe is surrounded with earth rock where its temperature is 383 K. The flow is turbulent. Can anyone help? Thank you. http://imageshack.com/a/img923/9053/kqKPjY.jpg water inlet v = 0.5m/s t = 283 K surface of outer pipe = 383 K the outer pipe is surrounded with earth rock where its temperature is 383 K. the flow is turbulent |
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If you want to proceed with the same mesh, just turn off the secondary gradient of the temperature by typint the following command in TUI (rpsetvar 'temperature/shell-secondary-gradient? #f) typpe the above command along with brackets and continue your run. All the warnings will go after some iterations. |
Try a better initial guess.
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Hi. Thanks for your reply. I had check my skewness quality with a maximum of 0.75. I'm using multizone method with hexa/prism mesh. I had already typed (rpsetvar 'temperature/shell-secondary-gradient? #f) in TUI command but the same problem with temperature being limited still exist. Please help. thank you.
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A better initial guess? Do you mind to explain further? Thank you very much
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If yes, please tell how did you do it Best |
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