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Coupling of 1D and 3D Pipe Flow (nonisothermal flow)
Posted 26 set 2025, 12:58 GMT-4 Fluid & Heat, Heat Transfer, Physics Interfaces Version 6.3 0 Replies
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Greetings: I am attempting to transfer flow conditions from a 1D nipfl (nonisothermal pipe flow) outlet to a 3D nonisothermal flow (nitf) domain inlet, however, I have been having trouble making this work.
The idea is simple: use the 1D mass flow rate (or pressure/velocity conditions) and outlet temperature and then use this data to produce an averaged value across the 2D fluid face for a 3D domain and continue analysis from there.
I understand normally you can use features like "pipe connection" for coupling 1D to 3D features, but I'm reasonably sure that nipfl is not supported for this, as I cannot apply this multiphysics feature with the current physics present.
Supposedly this can be done with general extrusion (1D point to 2D face projection), however, I have not successfully figured out how to make this work from the documentation I have read.
Current simple test model is attached. It is meant to be a continuous uniform ID pipe with a thermal condition on the 1D length for testing purposes of this concept. Thanks.
Attachments:
Hello Artur Kucharewicz
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