{"id":160897,"date":"2021-08-02T02:38:59","date_gmt":"2021-08-02T02:38:59","guid":{"rendered":"\/forum\/forums\/topic\/different-mesh-significantly-impacts-simulation-results\/"},"modified":"2021-08-03T04:35:41","modified_gmt":"2021-08-03T04:35:41","slug":"different-mesh-significantly-impacts-simulation-results","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/different-mesh-significantly-impacts-simulation-results\/","title":{"rendered":"Different Mesh significantly impacts simulation results"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hi everyone,<\/p>\n<p>I am working on a fluent simulation to model natural convection heating inside a bag of liquid. I was able to successfully simulate it and get accurate results, then I changed the geometry slightly. The changes to the geometry were not significant at all, the general size and shape are still the same. It is relatively simple geometry too; just an elliptical cylinder that tapers inwards towards the top.<\/p>\n<p>However, now I noticed that my results significantly vary with different mesh sizes. For example, if I have 150k+ elements in my mesh my results are around 20-30% different than when I have 100-130k elements. And if I have over 250k elements in my mesh the simulation fails.<\/p>\n<p>Why does the mesh have such a significant impact on the results?<\/p>\n","protected":false},"template":"","class_list":["post-160897","topic","type-topic","status-closed","hentry","topic-tag-fluent","topic-tag-mesh-generation"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_old_reply_author_name_id":["Anonymous"],"_bbp_old_is_reply_anonymous_id":["false"],"_btv_view_count":["311"],"_bbp_likes_count":["0"],"_bbp_subscription":["238209"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["160897"],"_bbp_forum_id":["27790"],"_bbp_engagement":["62","198222"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["187346"],"_bbp_last_active_id":["187346"],"_bbp_last_active_time":["2021-08-03 04:35:41"]},"test":"dodonn4uic-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/160897\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=160897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}