{"id":216128,"date":"2022-06-15T19:09:44","date_gmt":"2022-06-15T19:09:44","guid":{"rendered":"\/forum\/forums\/topic\/evaporation-from-a-liquid-pool\/"},"modified":"2022-06-15T19:09:44","modified_gmt":"2022-06-15T19:09:44","slug":"evaporation-from-a-liquid-pool","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/evaporation-from-a-liquid-pool\/","title":{"rendered":"Evaporation from a liquid pool"},"content":{"rendered":"
Hi All, <\/div>\n
 <\/div>\n
I’m a relative novice to fluent. I’m running into issues trying to model evaporation from a liquid pool into a vapor+gas space. <\/div>\n
I am using the multiphase(VOF) model with two phases (water vapor and water liquid). I have mass transfer via evaporation\/condensation enabled between the two phases. <\/div>\n
It is transient and energy model is on. <\/div>\n
 <\/div>\n
The geometry is a skinny rectangle (.1mm x 2mm) mesh is square (0.02mm). BC is a temperature at the bottom wall, sides are symmetry. <\/div>\n
 <\/div>\n
I separate the liquid and vapor phases via cell registers and patch to start with liquid on one half of the geometry and vapor on the other half. <\/div>\n
 <\/div>\n
When I run this, the residuals bounce around (do not seem to be converging) and the liquid seems to diffuse into the vapor-space. I would expect to see the liquid interface recede as the water evaporates – not diffuse. I do not have gravity on (but the results are the same regardless). Any ideas what I am missing here? Thanks!
 \"Mesh\"\"Water\"water\"residuals\"<\/div>\n
 <\/div>\n","protected":false},"template":"","class_list":["post-216128","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["492","406","199"],"_bbp_author_ip":["204.2.243.124"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["815"],"_edit_lock":["1655320448:183948"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["216128"],"_bbp_forum_id":["27792"],"_bbp_engagement":["199","406","492"],"_bbp_voice_count":["3"],"_bbp_reply_count":["7"],"_bbp_last_reply_id":["216493"],"_bbp_last_active_id":["216493"],"_bbp_last_active_time":["2022-06-21 17:40:05"]},"test":"cneedhamumd-edu"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/216128","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\/216128\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=216128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}