{"id":158218,"date":"2021-05-06T13:16:13","date_gmt":"2021-05-06T13:16:13","guid":{"rendered":"\/forum\/forums\/topic\/using-a-pressure-inlet-outlet-condition-in-fluent\/"},"modified":"2022-04-04T17:47:25","modified_gmt":"2022-04-04T17:47:25","slug":"using-a-pressure-inlet-outlet-condition-in-fluent","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/using-a-pressure-inlet-outlet-condition-in-fluent\/","title":{"rendered":"Using a pressure inlet\/outlet condition in fluent"},"content":{"rendered":"
\n
\n

Hi<\/p>\n

I'm simulating a 2D multiphase phase change problem of water vapour condensing ontop of a pipe wall. I'm currently following a paper to validate my simulation. However in the paper they use OpenFoam to simulate the problem in which the boundary conditions they state are slightly different.<\/p>\n

For example on the figure below at boundary b), they use a pressure inlet\/outlet boundary condition where the boundary condition switches between being a zerograident condition when outflow occurs and a fixedvalue when inflow occurs. <\/p>\n

In my case I will have outflow and inflow since the water vapour will be coming into the domain as the wall temperature is below the saturation temperature of the fluid domain (50 K difference) and outflow will occur as the condensate will drip off the pipe and exit the domain. <\/p>\n

<\/p>\n

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

\n
\n
\n\"image.png\"
\n<\/a><\/p>\n","protected":false},"template":"","class_list":["post-158218","topic","type-topic","status-closed","hentry","topic-tag-evaporation-condensation"],"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