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non uniform flow

Posted Jul 18, 2014, 5:13 a.m. EDT 2 Replies

Matthew James
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Dear all,

I am trying to create a flow through a pipe in a 2D geometry to compare to experiment. The problem is that in reality I have a vortex, and I know from measurements that the pressure is lowest in the centre of the pipe, and gradually increases away from the centre. The vortex means that there is no contact with the walls, as this is important for what I am doing. I would like to try and replicate this in my model, and not just have a uniform pressure. Does anyone know how I could do this?

Thanks
2 Replies Last Post Jul 22, 2014, 11:07 a.m. EDT
Erik Bornhöft COMSOL Employee

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Posted: 1 decade ago Jul 21, 2014, 10:35 a.m. EDT
Dear Matt,

if you have a 2D-axisymmetry-model and want to include flow in phi-direction you can add the "swirl flow" option. That option is avaiable with the CFD-module. See for example:
www.comsol.de/model/swirl-flow-around-a-rotating-disk-616

--
Best regards,
Erik

*********************
Erik Bornhöft
Senior Technical Sales Engineer
COMSOL Multiphysics GmbH
Robert-Gernhardt-Platz 1
37073 Göttingen
Deutschland

Knowledge Base:
www.comsol.de/support/knowledgebase/browse/900/

COMSOL Blog:
www.comsol.de/blogs/
Dear Matt, if you have a 2D-axisymmetry-model and want to include flow in phi-direction you can add the "swirl flow" option. That option is avaiable with the CFD-module. See for example: http://www.comsol.de/model/swirl-flow-around-a-rotating-disk-616 -- Best regards, Erik ********************* Erik Bornhöft Senior Technical Sales Engineer COMSOL Multiphysics GmbH Robert-Gernhardt-Platz 1 37073 Göttingen Deutschland Knowledge Base: http://www.comsol.de/support/knowledgebase/browse/900/ COMSOL Blog: http://www.comsol.de/blogs/
Matthew James
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Posted: 1 decade ago Jul 22, 2014, 11:07 a.m. EDT
Thankyou I will have a look
Thankyou I will have a look

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