{"id":163938,"date":"2021-11-13T03:15:33","date_gmt":"2021-11-13T03:15:33","guid":{"rendered":"\/forum\/forums\/topic\/eulerian-wall-film\/"},"modified":"2021-11-15T18:16:02","modified_gmt":"2021-11-15T18:16:02","slug":"eulerian-wall-film","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/eulerian-wall-film\/","title":{"rendered":"Eulerian Wall Film"},"content":{"rendered":"<div class=\"Item-Body\">\n<div class=\"Message userContent\">\n<p>Hi there,<\/p>\n<p>I am simulating the evaporation process of a static thin water layer in natural ventilation conditions. I have tried some methods and found EWF may be a good option.<\/p>\n<p>However, I am a bit confused about the phase change model in EWF. There are two phase change models in EWF, one is wall-boundary-layer, and another one is the diffusion balance model.<\/p>\n<p>For wall-boundary-layer, it is quite clear. The equation considers the diffusion and convective flow of vapour on the phase interface. Please correct me if I was wrong.<\/p>\n<p><\/p>\n<p><\/p>\n<\/p>\n<p>However, for the diffusion balance model, there is no citation or derivation of the equations. Do you have any references elaborating the derivation of the below equations? Why there is a constant in diffusion balance model whilst there is no constant in wall-boundary-layer?<\/p>\n<p>By far, I am not clear on the difference between these two, and which one better fits my simulation.<\/p>\n<p>Please kindly help.<\/p>\n<p>Cheers<\/p>\n","protected":false},"template":"","class_list":["post-163938","topic","type-topic","status-closed","hentry","topic-tag-eulerian-wall-film","topic-tag-multiphase"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_author_ip":[""],"_bbp_view_count":["296"],"_bbp_likes_count":["0","0"],"_bbp_forum_subforum_count":["0"],"_btv_view_count":["1548"],"_bbp_subscription":["253604"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["163938"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","9108","22555"],"_bbp_voice_count":["3"],"_bbp_reply_count":["2"],"_bbp_last_reply_id":["197624"],"_bbp_last_active_id":["197624"],"_bbp_last_active_time":["2021-11-15 18:16:02"]},"test":"b404957074"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/163938","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\/163938\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=163938"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}