frozen rotor in official OpenFOAM ?

gozo · May 26, 2020, 04:40

Hi.
I am a newer for OF and I have been trying to solve turbo machinery problem, such as stator-rotor problem, with official version of OF, like v1912, but I couldn't get the solution yet.
I'm seeing many guys recommend the foam-extend.
(OpenFOAM-v1912 released
Mixing plane interfaces Openfoam 7.0)
But after failing in installation of foam-extend, I am just trying back with v1912. And I just found 'partialFaceAreaWeightAMI' expecting it to be like 'frozen rotor'. But it does not have any explanation.

Could anyone give me some comment about my problem?

best regard.

WhiteW · July 7, 2020, 17:09

Hi,
is there any forzen rotor model of rotor-stator interface in OpenFOAM.com?
How can I couple a single rotor blade with a single stator blade but with different pitch angle?
Thanks,
WhiteW

Ardali · July 7, 2020, 19:24

Hi,

This is tricky question. There is something which I tried in 2015 but it did not work well.

That is available in OpenFoam-extended. It has bugs and it does not work well, based on Hrv Jasak. The point is I do not know he debugged it or not after 2018.
Please see this link: http://www.tfd.chalmers.se/~hani/kur...er_reviewd.pdf

For you other question for forzen rotor, check tutorials of SRFPimpleFoam and SRFSimpleFoam. You can find some nice stuff there. mixerVessel is nice tutorial for this functionality too.
Good luck
Ardalan

WhiteW · July 14, 2020, 10:26

Dear Ardali,
thanks for your reply.
I found an implementation for mixingPlane in Foam extend version however there is not a frozen rotor model.

The SRF tutorials are quite interesting, however there is only one rotating region and so there is no need of interface between a rotor and a stator zone.
I checked the mixelVessel, there is the rotor-stator interface, however it simulates the full geometry, so there is no need of an approach such as the mixingPlane or the frozenRotor to average the quantities between domains interfaces.
The axialTurbine tutorial of foam extend implements the mixingPlane interface model. It is interesting however the slices of domains have the same extension, I'll try to test it on a different number of blades.

WhiteW

Carlo_P · September 28, 2020, 07:06

Hey White,

you donn't have to use the SRF but the MRF.

In this case, you can assing the rotating volume in the constant directory.

May 26, 2020, 04:40	frozen rotor in official OpenFOAM ?	#1
gozo New Member kang seung-hwan Join Date: Apr 2020 Posts: 5 Rep Power: 6	Hi. I am a newer for OF and I have been trying to solve turbo machinery problem, such as stator-rotor problem, with official version of OF, like v1912, but I couldn't get the solution yet. I'm seeing many guys recommend the foam-extend. (OpenFOAM-v1912 released Mixing plane interfaces Openfoam 7.0) But after failing in installation of foam-extend, I am just trying back with v1912. And I just found 'partialFaceAreaWeightAMI' expecting it to be like 'frozen rotor'. But it does not have any explanation. Could anyone give me some comment about my problem? best regard.

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July 7, 2020, 17:09		#2
WhiteW Member Join Date: Dec 2015 Posts: 74 Rep Power: 10	Hi, is there any forzen rotor model of rotor-stator interface in OpenFOAM.com? How can I couple a single rotor blade with a single stator blade but with different pitch angle? Thanks, WhiteW

July 7, 2020, 19:24		#3
Ardali Member Ardalan Join Date: Jul 2012 Location: Atlanta, USA Posts: 77 Rep Power: 14	Hi, This is tricky question. There is something which I tried in 2015 but it did not work well. That is available in OpenFoam-extended. It has bugs and it does not work well, based on Hrv Jasak. The point is I do not know he debugged it or not after 2018. Please see this link: http://www.tfd.chalmers.se/~hani/kur...er_reviewd.pdf For you other question for forzen rotor, check tutorials of SRFPimpleFoam and SRFSimpleFoam. You can find some nice stuff there. mixerVessel is nice tutorial for this functionality too. Good luck Ardalan

July 14, 2020, 10:26		#4
WhiteW Member Join Date: Dec 2015 Posts: 74 Rep Power: 10	Dear Ardali, thanks for your reply. I found an implementation for mixingPlane in Foam extend version however there is not a frozen rotor model. The SRF tutorials are quite interesting, however there is only one rotating region and so there is no need of interface between a rotor and a stator zone. I checked the mixelVessel, there is the rotor-stator interface, however it simulates the full geometry, so there is no need of an approach such as the mixingPlane or the frozenRotor to average the quantities between domains interfaces. The axialTurbine tutorial of foam extend implements the mixingPlane interface model. It is interesting however the slices of domains have the same extension, I'll try to test it on a different number of blades. WhiteW

September 28, 2020, 07:06		#5
Carlo_P Senior Member Carlo_P Join Date: May 2019 Location: Italy Posts: 176 Rep Power: 8	Hey White, you donn't have to use the SRF but the MRF. In this case, you can assing the rotating volume in the constant directory.