{"id":161622,"date":"2021-08-26T01:00:24","date_gmt":"2021-08-26T01:00:24","guid":{"rendered":"\/forum\/forums\/topic\/continuity-residual-is-above-1-in-the-transient-calculation-dynamic-meshlescompressble-flow\/"},"modified":"2021-08-27T14:42:22","modified_gmt":"2021-08-27T14:42:22","slug":"continuity-residual-is-above-1-in-the-transient-calculation-dynamic-meshlescompressble-flow","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/continuity-residual-is-above-1-in-the-transient-calculation-dynamic-meshlescompressble-flow\/","title":{"rendered":"Continuity residual is above 1 in the transient calculation (dynamic mesh+LES+compressble flow)"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hello,<\/p>\n<p>In our transient calculation, the value of last continuity residual in every time step is greated than 1. I am not sure if this calculation is accurate. The models applied are VOF model, LES model, dynamic mesh and compressible flow (ideal gas). I hope someone can tell me the accuracy of this calculation. If this simualtion lacks accuracy, how can I solve it?<\/p>\n<p>Otherwise, how to choose the time discrete scheme, first-order or second-order? When I choose second-order, the solution is instability. While I choose first-order, I am afraid of the precision of LES.<\/p>\n<p>Best regards!<\/p>\n<div class=\"embedExternal embedImage\">\n<div class=\"embedExternal-content\">\n<a class=\"embedImage-link\" href=\"\/forum\/wp-content\/uploads\/forum-uploads\/937\/BVGT76D4SESR.png\" rel=\"nofollow noopener\" target=\"_blank\"><br \/>\n<img decoding=\"async\" class=\"embedImage-img\" src=\"\/forum\/wp-content\/uploads\/forum-uploads\/937\/BVGT76D4SESR.png\" alt=\"QQ\u56fe\u724720210826084825.png\" \/><br \/>\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-161622","topic","type-topic","status-closed","hentry","topic-tag-continuity-residuals-1","topic-tag-dynamic-mesh","topic-tag-les"],"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":["2903"],"_bbp_likes_count":["0"],"_bbp_subscription":["244888","273724"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["161622"],"_bbp_forum_id":["27792"],"_bbp_engagement":["118","170514","273724"],"_bbp_voice_count":["3"],"_bbp_reply_count":["5"],"_bbp_last_reply_id":["249481"],"_bbp_last_active_id":["249481"],"_bbp_last_active_time":["2023-02-11 10:11:55"]},"test":"bart"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/161622","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\/161622\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=161622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}