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Helyx using MRF

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Old   November 23, 2017, 05:02
Question Helyx using MRF
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Hendrik
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Good Day everybody!

I’m trying to simulate a big fan using Helyx-OS. I would like to simulate the fan blades moving and pushing the air forwards. Unfortunately I'm doing something wrong. I defined a volume around the blades as MRF and set it to an angular velocity. As boundary conditions I choose the “pressure inlet outlet” for both ends of the main pipe and set the pressure to one zero gradient and one total pressure = 0.

The results are in the two images in the links below.

https://picload.org/view/drlprawr/1.png.html
https://picload.org/view/drlprapw/2.png.html

It seems that the air is moving just circular. It definitely does not get pushed or sucked forward. The main movement of the air seems to be in the wrong direction. The second problem is that the blades are not moving from time step to time step.

What am I doing wrong?

Cheers
Hendrik


Last edited by hotti24; November 23, 2017 at 08:24.
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Old   October 28, 2020, 10:40
Default Need help sir
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Ahmed Abrar Shayor
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Sir I really need help from you as a new user of Helyx OS.I just want to know is there any limitation of Helyx OS.If so what are they could please tell me?I would be really really grateful.Thank you sir.
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fan aerodynamic, helyx, mrf, multi reference frams, rotating mesh

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