{"id":141055,"date":"2021-02-03T10:15:26","date_gmt":"2021-02-03T10:15:26","guid":{"rendered":"\/forum\/forums\/reply\/141055\/"},"modified":"2021-02-03T10:15:26","modified_gmt":"2021-02-03T10:15:26","slug":"141055","status":"publish","type":"reply","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/reply\/141055\/","title":{"rendered":"Reply To: Negative temperature results after conjugate heat-transfer"},"content":{"rendered":"<p> and I tried modeling without the pipe wall part sticking outside the sand region and it seemed to work. But I have a few doubts that would be great if I can have clarified:n- I kept the top of sand region at constant 70C . But after the solution was calculated,  the top of the sand was 67.9C. Is this normal or does it mean the results are wrong?n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/B5GHQ6CEMSBN\/image.png\" width=\"277\" height=\"353\" \/>n- Also, the residuals started rising <strong>a bit<\/strong> midway around 200-250 iterations but then started dropping again. Is this fine or is it also a problem?n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/us.v-cdn.net\/6032193\/uploads\/SK0I915DAVRR\/image.png\" width=\"724\" height=\"413\" \/>nYour advice is much appreciated!nn<\/p>\n","protected":false},"template":"","class_list":["post-141055","reply","type-reply","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"and I tried modeling without the pipe wall part sticking outside the sand region and it seemed to work. 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