{"id":310524,"date":"2023-10-08T07:52:17","date_gmt":"2023-10-08T07:52:17","guid":{"rendered":"\/forum\/forums\/topic\/error-latent-heat-cannot-be-less-than-zero\/"},"modified":"2023-10-08T07:52:17","modified_gmt":"2023-10-08T07:52:17","slug":"error-latent-heat-cannot-be-less-than-zero","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/error-latent-heat-cannot-be-less-than-zero\/","title":{"rendered":"ERROR: Latent heat cannot be less than zero!"},"content":{"rendered":"

Hi,<\/p>\n

I am having an issue in ANSYS simulation. I am trying to do condensation of water vapor to water liquid but when I initialize the solution, it says latent heat cannot be less than zero. <\/p>\n

\"\"<\/p>\n

I tried to search online & it comes to my knowledge that it is related to enthalpy. <\/p>\n

as enthalpy of liquid is -2.858e+08 and <\/p>\n

enthalpy for vapor is -2.418e+08 at standard temperature. so change in enthalpy is coming negative which means the latent heat is less than zero. <\/p>\n

\"\"\"\"<\/p>\n

Can anyone help me, how to resolve this issue or what values I need to choose for enthalpies in this case.<\/p>\n

 <\/p>\n

NOTE: I already did the simulation for water boiling\/evaporation and I didn’t face such issue in that particular case. <\/p>\n","protected":false},"template":"","class_list":["post-310524","topic","type-topic","status-closed","hentry","topic-tag-multiphase_models-1","topic-tag-multiphaseudfevaporationdpmspeciestransportdefinesourcesourcetermeulerianlagrangian-1","topic-tag-latent-heat","topic-tag-vof"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t