{"id":163473,"date":"2021-10-28T03:22:22","date_gmt":"2021-10-28T03:22:22","guid":{"rendered":"\/forum\/forums\/topic\/i-need-help-with-simulating-the-flow-of-a-polymer-through-the-hot-end-of-an-extruder\/"},"modified":"2021-11-01T17:04:20","modified_gmt":"2021-11-01T17:04:20","slug":"i-need-help-with-simulating-the-flow-of-a-polymer-through-the-hot-end-of-an-extruder","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/i-need-help-with-simulating-the-flow-of-a-polymer-through-the-hot-end-of-an-extruder\/","title":{"rendered":"I need help with simulating the flow of a polymer through the hot end of an extruder."},"content":{"rendered":"
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I am trying to simulate the flow of a polymer through the hot end of a filament extruder. A run down of my system would be, the polymer is fed into the system via a hopper (not included in the hot end). The polymer, in it's current state moves through the system via the movement of an auger bit and then once it reaches the band heater (the heating element) it is liquefied and then it moves out of the hexagonal steel pipe (or brass plug) and is cooled to form a long continuous strand of filament. I have included schematic diagram as well as the the 3D rendition of the hot end as reference. I have been told to use Ansys Polyflow but I every time I try to use it I get the following error message: <\/p>\n

“The domain of the sub task F.E.M. Task 1 Subtask 1 is composed of disconnected sub-domains. Sub tasks must be defined on connected sub domains! Please consider using Non-conformal boundaries!”<\/p>\n

 I shared the topology within SpaceClaim but I am still not getting it right. I tried using Fluent but I can't model the change of phase of the polymer as it enters the system as a solid and then is liquefied and then cooled into a solid. Thank you advance. <\/p>\n

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