{"id":240955,"date":"2022-11-16T07:35:10","date_gmt":"2022-11-16T07:35:10","guid":{"rendered":"\/forum\/forums\/topic\/cfd-modelling-of-flashing-flow-in-cd-nozzle\/"},"modified":"2022-11-16T07:35:10","modified_gmt":"2022-11-16T07:35:10","slug":"cfd-modelling-of-flashing-flow-in-cd-nozzle","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/cfd-modelling-of-flashing-flow-in-cd-nozzle\/","title":{"rendered":"CFD modelling of Flashing flow iN CD nozzle"},"content":{"rendered":"<p><span lang=\"EN-GB\">Hello all..<\/span><\/p>\n<p><span lang=\"EN-GB\">I am trying to simulate flashing flow of water in CD nozzle in Fluent using Eulerian with thermal phase change model. However, the solution is not converging. I tried changing the scaling factor, still no improvement. Mesh quality is good.<\/span><\/p>\n<p><span lang=\"EN-GB\">I also tried default cavitation model (Schnerr-Sauer\/ Zwart-Gerber-Belamri). In this case convergence is good, but outlet pressure changes to saturation pressure, which is strange (Fig is attched). I have tried both with constant vaporization pressure as well as with UDF. How can this model breach outlet boundary condition, which was imposed?<\/span><\/p>\n<p>Thanks in advance!<\/p>\n<p><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/11\/16-11-2022-1668584002-cav.PNG\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-240955","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["27972","22555"],"_bbp_author_ip":["23.220.96.180"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["1807"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["240955"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","27972"],"_bbp_voice_count":["2"],"_bbp_reply_count":["9"],"_bbp_last_reply_id":["241831"],"_bbp_last_active_id":["241831"],"_bbp_last_active_time":["2022-11-23 12:40:26"]},"test":"amkumdtu-dk"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/240955","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\/240955\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=240955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}