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-   -   My first English document on CFD for rotating machinery using OpenFOAM (https://www.cfd-online.com/Forums/openfoam/135796-my-first-english-document-cfd-rotating-machinery-using-openfoam.html)

fumiya May 18, 2014 01:08

My first English document on CFD for rotating machinery using OpenFOAM
 
Hi,

I've uploaded my first English document on the CFD for rotating machinery using OpenFOAM.
I'll revise this slide in the future to improve it and make it more useful to the new users of OpenFOAM.

http://www.slideshare.net/fumiyanoza...using-openfoam

Please let me know if you have any suggestions for which topics to cover:)

Hope this helps,
Fumiya

fumiya July 19, 2015 12:05

Hi,

I've updated ch. 3 to give a thorough explanation of MRF (Multiple Reference Frame) model in OpenFOAM.

http://www.slideshare.net/fumiyanoza...using-openfoam

I hope this helps.

Best Regards,
Fumiya

Kossivi November 18, 2015 18:57

Quote:

Originally Posted by fumiya (Post 556032)
Hi,

I've updated ch. 3 to give a thorough explanation of MRF (Multiple Reference Frame) model in OpenFOAM.

http://www.slideshare.net/fumiyanoza...using-openfoam

I hope this helps.

Best Regards,
Fumiya

Hi fumiya,
Thank for the slides. It really helps.
I would like to ask a question about SRFSimplefoam and MRFSimplefoam.
If a have a case that I run with MRF (stationnary and rotating frame) to get pressure drop inlet - outlet. And the same case I consider the whole domain (stators and rotor) as a single frame that is rotating and run it with SRFsimplefoam.
Should I have the same result? I will really appreciate if you can give me some clarification about that.
Thanks

Kossivi

phsieh2005 November 23, 2015 09:47

Hi, Fumiya,

Thanks! Very helpful.

For a transient case using pimpleDyMFoam solver, what is your suggestion for delta t? I ran a case with 4000 rpm impeller speed. Delta t dropped to a very small value. Not sure if I did not setup the case correctly or the delta t needs to be very small. Any suggestion?

Pei-Ying

yuanlee2011 January 10, 2018 03:37

Quote:

Originally Posted by fumiya (Post 556032)
Hi,

I've updated ch. 3 to give a thorough explanation of MRF (Multiple Reference Frame) model in OpenFOAM.

http://www.slideshare.net/fumiyanoza...using-openfoam

I hope this helps.

Best Regards,
Fumiya

The web links cannot be opened,could you please share me a new one?(yuanlee2011@gmail.com)

viraj20feb February 13, 2018 20:18

I have a 3D geometry consisting of a vessel which has a rotating shaft and blades assembly inside it. I am trying to set a MRF zone for this case when the shaft and blades rotate and the vessel is stationary. In all the cases which I have scene, the MRF zone is defined only in the region surrounding these impeller blades.

My question is, since the rotating patches will have an effect over the entire volume, why don't we define the MRF zone for the entire volume(instead of the volume surrounding the blades) and define the vessel in the nonRotatingPatches condition?

Also, what happens at the interface of MRF zone and non-MRF zone? Which equations are solved?

Thank you!



Quote:

Originally Posted by fumiya (Post 556032)
Hi,

I've updated ch. 3 to give a thorough explanation of MRF (Multiple Reference Frame) model in OpenFOAM.

http://www.slideshare.net/fumiyanoza...using-openfoam

I hope this helps.

Best Regards,
Fumiya



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