Adjoint Optimization Discussion

hokhay · January 8, 2019, 23:34

Hi Foamers,

I am recently looking to develop an adjoint optimization solver for external flow in OpenFOAM. I have done quite a bit of search both in this forum and google but what I have got are very little development in this area. There are some research in this area but mostly for the internal flow not for external and even there is external flow research, the source code is not shared.

I would like to open this post to get everyone who is interested in adjoint optimization topic to centralize the information that we have got, for example the research paper or code they have developed, hopefully.

Here are some papers that I have collected:
http://www.tfd.chalmers.se/~hani/kur...ortAdjoint.pdf
http://www.piercelab.caltech.edu/ass...pers/ftc00.pdf
http://mdolab.engin.umich.edu/sites/..._Adjoint_1.pdf
https://web.stanford.edu/~deman/docs...-2017-4413.pdf
https://www.researchgate.net/publica...l_for_OpenFOAM
http://www.diva-portal.org/smash/get...FULLTEXT02.pdf

The last paper is the only one with source code attached but it is only wind noise optimization and it is not compatible with OpenFOAM-6.

I hope this would help everyone and make OpenFOAM stronger.

Jason

AndreasPe · January 9, 2019, 03:31

Hi Hokhay,

thank you for sharing these papers. I know about another project where a discrete adjoint version of OpenFOAM has been developed:

https://www.stce.rwth-aachen.de/rese...djointopenfoam

The source code is available on request and some papers are also freely available on this page.

hokhay · January 9, 2019, 07:31

Quote:

Originally Posted by AndreasPe

Hi Hokhay,

thank you for sharing these papers. I know about another project where a discrete adjoint version of OpenFOAM has been developed:

https://www.stce.rwth-aachen.de/rese...djointopenfoam

The source code is available on request and some papers are also freely available on this page.

Thanks for sharing, Andreas. This is a very good source

clapointe · January 9, 2019, 14:03

We have used the aachen code successfully in the past. A paper is in development, but work is also documented in this conference paper : https://www.researchgate.net/publica...sing_Adjoints.

Caelan

palarcon · March 7, 2019, 05:25

Is there anybody else interested on this subject?
I'm working with OpenFOAM and optimization algorithms, but more focused on the topology optimization part.
Would be nice to have somebody else to discuss about it.

atenamsv · December 20, 2019, 06:38

Hey i'm just new to openfoam optimization but i'm working on a combination of level set method with adjoint variable to optimize a jet pump

HPE · December 20, 2019, 13:06

I think an important update for the `adjoint optimisation` is upcoming in the v1912:

https://develop.openfoam.com/adjoint...-adjoint-v1912

Cambridge · February 9, 2020, 11:25

Quote:

Originally Posted by palarcon

Is there anybody else interested on this subject?
I'm working with OpenFOAM and optimization algorithms, but more focused on the topology optimization part.
Would be nice to have somebody else to discuss about it.

Hi

I am new in Openfoam and TO. Do you have any basic codes for topology optimization in Openfoam? Can we discuss this topic?

Thank you.

palarcon · February 10, 2020, 05:11

Quote:

Originally Posted by Cambridge

Hi

I am new in Openfoam and TO. Do you have any basic codes for topology optimization in Openfoam? Can we discuss this topic?

Thank you.

The only code that I posses, in addition to the base one adjointShapeOptimizationFoam is my own.
We can discuss for sure, nonetheless my code is not yet in condition to be shared because is still under development.

palarcon · February 10, 2020, 05:12

Quote:

Originally Posted by HPE

I think an important update for the `adjoint optimisation` is upcoming in the v1912:

https://develop.openfoam.com/adjoint...-adjoint-v1912

The link is no longer available.

HPE · February 11, 2020, 17:08

Dont bother with the link. OpenFOAMv1912 now possess an adjoint optimisation module provided by the Technical University of Athens.

Cambridge · February 12, 2020, 12:13

Quote:

Originally Posted by palarcon

The only code that I posses, in addition to the base one adjointShapeOptimizationFoam is my own.
We can discuss for sure, nonetheless my code is not yet in condition to be shared because is still under development.

Thank you so much. So which version of OpenFOAM do you use, is that v1912? What are your suggestions for me to learn topology optimization using OF? Thank you.

Kind regards

Cambridge · February 12, 2020, 12:14

Quote:

Originally Posted by HPE

Dont bother with the link. OpenFOAMv1912 now possess an adjoint optimisation module provided by the Technical University of Athens.

Hi, is there any tutorials about topology optimization in the lates version of OpenFOAM? Thank you so much.

atenamsv · April 6, 2020, 06:21

Hey I am also new in openfoam optimization. Did you succeed in implementing compressible rhoSimple loop into default adjoint optimization code of openfoam?

atenamsv · June 25, 2020, 05:11

Quote:

Originally Posted by clapointe

We have used the aachen code successfully in the past. A paper is in development, but work is also documented in this conference paper : https://www.researchgate.net/publica...sing_Adjoints.

Caelan

Hello Caelan
I have read your conference paper with the title of "Optimization for internal turbulent compressible flow using adjoints" is there any possibility that you share the code so that we can use and cite it in our work too?
Atena

clapointe · July 24, 2020, 16:18

Apologies for the delayed response -- I've been quite busy lately. Yes, please feel free to use the code. I've added it to my public git repository (https://github.com/clapointe2011/public). We've not used it for quite some time, but it should work without too much issue. If it does appear buggy, let me know and I can try to track down the issues.

As you know it was used as part of an AIAA conference paper; we also have a publication that has been "nearly done" for a number of years that we will deal with -- it will at least be archived soon so a short description of the nozzle design is available.

Caelan

friedenhe · August 1, 2020, 00:01

For those who are interested, we have developed a suite of discrete adjoint solvers for OpenFOAM. Check the installation and tutorials from https://dafoam.github.io. Hopefully you will find it useful.

Kktt · October 15, 2021, 10:35

Hello,

Tha's sounds great, but and concretely, how to use it on a specific case ?
Are there any tutorials available somewhere?

yuvrajxsorout · March 20, 2023, 15:42

I am bit new to shape optimization and trying to implement continuous adjoint based shape optimization. I want to do Unsteady RANS in openFoam.

Is it possible ?

Please share your insight

January 8, 2019, 23:34	Adjoint Optimization Discussion	#1
hokhay Member Join Date: Nov 2014 Posts: 92 Rep Power: 12	Hi Foamers, I am recently looking to develop an adjoint optimization solver for external flow in OpenFOAM. I have done quite a bit of search both in this forum and google but what I have got are very little development in this area. There are some research in this area but mostly for the internal flow not for external and even there is external flow research, the source code is not shared. I would like to open this post to get everyone who is interested in adjoint optimization topic to centralize the information that we have got, for example the research paper or code they have developed, hopefully. Here are some papers that I have collected: http://www.tfd.chalmers.se/~hani/kur...ortAdjoint.pdf http://www.piercelab.caltech.edu/ass...pers/ftc00.pdf http://mdolab.engin.umich.edu/sites/..._Adjoint_1.pdf https://web.stanford.edu/~deman/docs...-2017-4413.pdf https://www.researchgate.net/publica...l_for_OpenFOAM http://www.diva-portal.org/smash/get...FULLTEXT02.pdf The last paper is the only one with source code attached but it is only wind noise optimization and it is not compatible with OpenFOAM-6. I hope this would help everyone and make OpenFOAM stronger. Jason mCiFlDk likes this.

December 20, 2019, 06:38	Combination of adjoint with level set	#6
atenamsv New Member ATN Join Date: Jun 2015 Posts: 5 Rep Power: 11	Hey i'm just new to openfoam optimization but i'm working on a combination of level set method with adjoint variable to optimize a jet pump

December 20, 2019, 13:06		#7
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 931 Rep Power: 13	I think an important update for the `adjoint optimisation` is upcoming in the v1912: https://develop.openfoam.com/adjoint...-adjoint-v1912 __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

February 11, 2020, 17:08		#11
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 931 Rep Power: 13	Dont bother with the link. OpenFOAMv1912 now possess an adjoint optimisation module provided by the Technical University of Athens. __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

August 1, 2020, 00:01		#17
friedenhe New Member Ping He Join Date: Jun 2019 Posts: 7 Rep Power: 7	For those who are interested, we have developed a suite of discrete adjoint solvers for OpenFOAM. Check the installation and tutorials from https://dafoam.github.io. Hopefully you will find it useful. davidtimide, nuaawqf and wo315 like this.

January 9, 2019, 03:31		#2
AndreasPe Member Andreas P. Join Date: May 2017 Posts: 41 Rep Power: 9	Hi Hokhay, thank you for sharing these papers. I know about another project where a discrete adjoint version of OpenFOAM has been developed: https://www.stce.rwth-aachen.de/rese...djointopenfoam The source code is available on request and some papers are also freely available on this page.

January 9, 2019, 14:03		#4
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 15	We have used the aachen code successfully in the past. A paper is in development, but work is also documented in this conference paper : https://www.researchgate.net/publica...sing_Adjoints. Caelan

March 7, 2019, 05:25		#5
palarcon Member Pablo Alarcón Join Date: Mar 2018 Location: Liège Posts: 59 Rep Power: 8	Is there anybody else interested on this subject? I'm working with OpenFOAM and optimization algorithms, but more focused on the topology optimization part. Would be nice to have somebody else to discuss about it.

April 6, 2020, 06:21		#14
atenamsv New Member ATN Join Date: Jun 2015 Posts: 5 Rep Power: 11	Hey I am also new in openfoam optimization. Did you succeed in implementing compressible rhoSimple loop into default adjoint optimization code of openfoam?

July 24, 2020, 16:18		#16
clapointe Senior Member Join Date: Aug 2015 Posts: 494 Rep Power: 15	Apologies for the delayed response -- I've been quite busy lately. Yes, please feel free to use the code. I've added it to my public git repository (https://github.com/clapointe2011/public). We've not used it for quite some time, but it should work without too much issue. If it does appear buggy, let me know and I can try to track down the issues. As you know it was used as part of an AIAA conference paper; we also have a publication that has been "nearly done" for a number of years that we will deal with -- it will at least be archived soon so a short description of the nozzle design is available. Caelan

October 15, 2021, 10:35		#18
Kktt New Member Join Date: Oct 2021 Posts: 1 Rep Power: 0	Hello, Tha's sounds great, but and concretely, how to use it on a specific case ? Are there any tutorials available somewhere?

March 20, 2023, 15:42	Unsteady shape optimization in openFOAM	#19
yuvrajxsorout New Member Yuvraj Sarout Join Date: Mar 2023 Posts: 1 Rep Power: 0	I am bit new to shape optimization and trying to implement continuous adjoint based shape optimization. I want to do Unsteady RANS in openFoam. Is it possible ? Please share your insight

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