{"id":237269,"date":"2022-10-09T19:24:30","date_gmt":"2022-10-09T19:24:30","guid":{"rendered":"\/forum\/forums\/topic\/getting-latent-heat-can-not-be-less-than-zero-error-in-condensation-simulation\/"},"modified":"2022-10-09T19:24:30","modified_gmt":"2022-10-09T19:24:30","slug":"getting-latent-heat-can-not-be-less-than-zero-error-in-condensation-simulation","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/getting-latent-heat-can-not-be-less-than-zero-error-in-condensation-simulation\/","title":{"rendered":"Getting &#8220;Latent Heat can not be less than zero&#8221; error in Condensation simulation"},"content":{"rendered":"<p>Hello,<\/p>\n<p>I am trying to simulate water-vapor condensation, using VOF model. When adding materials from Fluent database, I manually add the values of Latent Heat:<\/p>\n<p>Zero for water-liquid and for Air, and 43987714 j\/Kgmol for water-vapor.<\/p>\n<p>When starting the calculation, it gives &#8220;Latent Heat can not be less than zero&#8221; error.<\/p>\n<p>I tried running the same geometry as an Evaporation simulation (reversed BC and starting with water-liquid at inlet, instead of vapor), it did not give the Latent Heat related error and based on attached contour, seems that Evaporation is actually happening and there is water-vapor in the domain.<img decoding=\"async\" title=\"water-vapor-volume-fraction(1)\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2022\/10\/09-10-2022-1665343197-water-vapor-volume-fraction(1).png\" alt=\"\"><\/p>\n<p>I would appreciate any comment on this.<\/p>\n<p>Thanks<\/p>\n","protected":false},"template":"","class_list":["post-237269","topic","type-topic","status-closed","hentry","topic-tag-condensation-evaporation-1","topic-tag-condensation-of-vapour-1"],"aioseo_notices":[],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["216824","22555","29843"],"_bbp_author_ip":["23.192.164.14"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["3150"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["237269"],"_bbp_forum_id":["27792"],"_bbp_engagement":["22555","29843","216824"],"_bbp_voice_count":["3"],"_bbp_reply_count":["6"],"_bbp_last_reply_id":["291117"],"_bbp_last_active_id":["291117"],"_bbp_last_active_time":["2023-06-30 20:04:02"]},"test":"ahkhoshbooiemun-ca"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/237269","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\/237269\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=237269"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}