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-   OpenFOAM Native Meshers: blockMesh (http://www.cfd-online.com/Forums/openfoam-meshing-blockmesh/)
-   -   2D airfoil optimisation the mesh (http://www.cfd-online.com/Forums/openfoam-meshing-blockmesh/61810-2d-airfoil-optimisation-mesh.html)

martapajon February 4, 2008 14:36

Dear all, I would need to a
 
Dear all,

I would need to apply Genetic Algorithms optimisation to optimise a 2D airfoil shape.
The main problem that I am facing is to mesh the airfoil and moreover to use the mesh from one shape to another in order to reduce the computational expenses (GA involves a lot of evaluations.
Due to this is an academic study ( I am an MSc student) I am not allowed to use commercial software, so I would need to mesh with BlockMesh or another free software.
I have read in one thread (http://www.cfd-online.com/cgi-bin/Op...cus/discus.cgi ) that BlockMesh is suitable for most 2D cases but in another thread (http://www.cfd-online.com/cgi-bin/Op...cus/discus.cgi ) seems to be the opposite.

Is there any way to do this with BlockMesh or any free software easy to use? Is there any database or any test case than can give me an example or a mesh that I could use?

Please, I would be very grateful if you give me some information, help or advice, I am really worried about this.

Best Regards,

Marta Pajon.

martapajon February 4, 2008 16:20

Well, in fact what I have to d
 
Well, in fact what I have to do is to apply the GA optimisation to some 2D shape related with aerodynamics, so if you think there is another posibility easier than the airfoil,please let me know.

Marta.

airfoil February 5, 2008 06:43

I know about a commercial soft
 
I know about a commercial software that can give change shape as parameter. Try Hypermesh morphing from Altair.

Leong

martapajon February 5, 2008 17:37

What about the files conteined
 
What about the files conteined in links as http://www.grc.nasa.gov/WWW/wind/val.../raetaf01.html ? are this grids suitable to use in OpenFOAM? Could I use them to run some airfoil example?

Please, just a quick yes or not would be very helpful for me.
Best regards,

Marta

martapajon February 5, 2008 17:53

Sorry but the post before was
 
Sorry but the post before was not complete. I know there is a converter utility: plot3dToFoam and I think it is ok for using the files that are included in the link that I was speaking about before. Is that right? does it means that the mesh would be generate just with this file?Thank you very much.

Edward! May 12, 2010 17:53

genetic algorithm
 
Hi!!

I am working with genetic algorithms used for optimization of turbine blades could someone recommend a good book or an article please!!!

Thank you very much

desert_1250 May 13, 2011 15:30

edward,
your question is my demand too, i am very glad if give me any advise
tnx
________
Rasoul

Edward! May 13, 2011 16:53

Gas Turbine optimization
 
Sure!!

First the thesis most recently it was written for ÖZHAN ÖKSÜZ is a Doctoral thsesis (MULTIPLOID GENETIC ALGORITHMS FOR MULTI-OBJECTIVE
TURBINE BLADE AERODYNAMIC OPTIMIZATION December 2007)

This is my best reference, he use 2 diferents fitness funtion; I use only one
iso-entopic efficiency

If you dont Kwon anithyng about Genetc Algorithms first you have to read
Introduction to Genetic Algorithms S.N Sivanandam S.N. Deepa

And its important that you define 3D or 2D meshs

Those are my recommendations!!

Another reference would be my Masters thesis but I will end this year!!

Greetings!!:)

Eduardo Chavolla

desert_1250 May 14, 2011 03:18

tax a lot for your quickly response dear Eduardo :) i am waiting for your master thesis :)

i gone optimize blade surface, do you know a bout this with OpenFOAM? or how do it with OF?

best regards
____________
Rasoul

Edward! May 14, 2011 13:33

Sorry man!!

I use GAMBIT to ceate my meshes and Turbo Volumens ; and I simulate in ANSYS 12.1 using Non-reflecting boundary conditions; for the chock wave

Greetings!!


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