{"id":295745,"date":"2023-07-31T18:15:39","date_gmt":"2023-07-31T18:15:39","guid":{"rendered":"\/forum\/forums\/topic\/melting-with-two-phases-vof\/"},"modified":"2023-07-31T18:18:06","modified_gmt":"2023-07-31T18:18:06","slug":"melting-with-two-phases-vof","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/melting-with-two-phases-vof\/","title":{"rendered":"Melting with Two phases (VOF)"},"content":{"rendered":"<p>Hi everyone,<\/p>\n<p>I am having problem with my simulation of ice (defined as liquid) melting under high air temperature.&nbsp;<\/p>\n<p>The model has two parts, the bottom part is the ice at 270K and the top part is air at 800K initially.&nbsp;<\/p>\n<p>Without even running the model, the plots I got from initialization (and Patch) look incorrect:<\/p>\n<ul>\n<li>The first plot attached shows the temperature and it looks right<\/li>\n<li>The second and third plots show the phase distributions of air and ice which also look right<\/li>\n<li style=\"text-align: left\">The fourth plot shows the liquid fraction of water and this is the one looks wrong. Why is the liquid water fraction in the air equals to 1 where there is no water phase at all in that region? To me, the correct plot should be showing 0 everywhere.<\/li>\n<\/ul>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690826993-2023-07-31 11_09_00-WDADesktopService.png\"><img loading=\"lazy\" decoding=\"async\" title=\"Initial Temp\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690826993-2023-07-31 11_09_00-WDADesktopService.png\" alt=\"\" width=\"402\" height=\"356\"><\/a><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827035-2023-07-31 11_09_07-WDADesktopService.png\"><img loading=\"lazy\" decoding=\"async\" title=\"Initial air phase\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827035-2023-07-31 11_09_07-WDADesktopService.png\" alt=\"\" width=\"392\" height=\"355\"><\/a><\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827109-2023-07-31 11_09_15-WDADesktopService.png\"><img loading=\"lazy\" decoding=\"async\" title=\"Initial water(ice) phase\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827109-2023-07-31 11_09_15-WDADesktopService.png\" alt=\"\" width=\"401\" height=\"359\"><\/a><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827137-2023-07-31 11_09_22-WDADesktopService.png\"><img loading=\"lazy\" decoding=\"async\" title=\"Initial liquid water fraction\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827137-2023-07-31 11_09_22-WDADesktopService.png\" alt=\"\" width=\"404\" height=\"358\"><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>If I ran the model (transient analysis) for some time, the liquid water fraction in the water phase does look physical (some portion of ice turned into liquid at the surface)<\/p>\n<p><a class=\"wp-colorbox-image cboxElement\" href=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827308-2023-07-31 11_07_53-WDADesktopService.png\"><img loading=\"lazy\" decoding=\"async\" title=\"After 1e-5s, liquid water fraction\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/07\/31-07-2023-1690827308-2023-07-31 11_07_53-WDADesktopService.png\" alt=\"\" width=\"400\" height=\"351\"><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>I am new to Fluent, please share your guidance. Thanks.<\/p>\n","protected":false},"template":"","class_list":["post-295745","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["290479","852"],"_bbp_author_ip":["23.223.149.206"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["833"],"_edit_lock":["1690827423:225863"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["295745"],"_bbp_forum_id":["27792"],"_bbp_engagement":["852","290479"],"_bbp_voice_count":["2"],"_bbp_reply_count":["4"],"_bbp_last_reply_id":["295980"],"_bbp_last_active_id":["295980"],"_bbp_last_active_time":["2023-08-01 19:15:43"]},"test":"ronfengucla-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/295745","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\/295745\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=295745"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}