{"id":293539,"date":"2023-07-18T07:36:32","date_gmt":"2023-07-18T07:36:32","guid":{"rendered":"\/forum\/forums\/topic\/fluent-setup-for-two-phase-co2h2o\/"},"modified":"2023-07-18T07:36:32","modified_gmt":"2023-07-18T07:36:32","slug":"fluent-setup-for-two-phase-co2h2o","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fluent-setup-for-two-phase-co2h2o\/","title":{"rendered":"Fluent, Setup for Two phase CO2+H2O"},"content":{"rendered":"

I have a 2D pipe, 2″ by 60″ inches. my BCs are pressure., with an inlet of 500.1 psi and an outlet of 500 psi. (0.1 pressure drop)<\/p>\n

gravity direction is negative y. (multiphase model is set to default Eulerian). The primary phase is CO2, secondary is set to be H20, with a default diameter.<\/p>\n

My problem is the following:<\/p>\n

       if I have two phases entering the pipe on the left side, from fluid mechanics perspective I expect, water (as a denser phase) to accumulate in the bottom of the pipe, and due to pressure change, flow towards the outlet. However, in my case, Water droplets chaotically flow through a pipe which is not realistic. I have attached phase velocity and pressure figures.
What I am doing wrong in setting up the model?
<\/p>\n

<\/p>\n

<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"template":"","class_list":["post-293539","topic","type-topic","status-closed","hentry","topic-tag-fluent-cfd-ansys-1","topic-tag-multiphase_models-1"],"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