{"id":362033,"date":"2024-04-12T20:29:29","date_gmt":"2024-04-12T20:29:29","guid":{"rendered":"\/forum\/forums\/topic\/mixing-planes-stage-vs-frozen-rotor-in-cfx-floating-point-errors\/"},"modified":"2024-04-12T20:29:29","modified_gmt":"2024-04-12T20:29:29","slug":"mixing-planes-stage-vs-frozen-rotor-in-cfx-floating-point-errors","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/mixing-planes-stage-vs-frozen-rotor-in-cfx-floating-point-errors\/","title":{"rendered":"Mixing planes (stage) vs Frozen Rotor in CFX floating point errors"},"content":{"rendered":"

Hi all,<\/p>\n

I am trying to run a simulation in CFX to determine the static thrust of a propeller. I have not been getting results that match experimental data, so I tried to compare FR to stage. However, with the exact same settings on both, I keep getting floating point overflow errors when using the stage interface when compared to FR. What would I need to change to make it work? I want to make this comparison because I will be using valid results to run a coaxial contra-rotating configuration, and frozen rotor will not be ideal for that simulation.<\/p>\n

What boundary conditions do I need to add to have a good simulation to get good results? I have tried total pressure, static pressure, velocity for the inlet, and pressure and opening outlets that haven’t provided good results. You can see the images here:<\/p>\n

<\/p>\n","protected":false},"template":"","class_list":["post-362033","topic","type-topic","status-closed","hentry","topic-tag-ansys-cfx","topic-tag-boundary-conditions","topic-tag-floating-point-error","topic-tag-frozenrotor-1","topic-tag-mixing-plane-1","topic-tag-propeller-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