A New Model Implementation!

T.D. · September 7, 2010, 08:28

Hi,
I need help, please?

I am new to OpenFOAM,
I have a new model,
and i need to know how exactly "to write in text the equations 1 and 2" to solve them ( in cylindrical coord)
see the attached jpeg file

Thanks a lot.

smehdi609 · September 8, 2010, 11:48

Hi,
yes, you can solve these equations, this is indeed the power of OpenFOAM, you can write all your solver in one simple C++ file. All the Calculus operators that you need is defined in OpenFOAM. You only need to use them. Once you write your solver, it is general, you can apply that to cylindrical geometries or whatever geometry that you have. You should spend some time and look at some simple solvers.
Mahdi

T.D. · September 8, 2010, 17:17

Thank you very much Mahdi
but i like someone really to write the text for me , in order not to make any mistake
anyway thanks a lot

smehdi609 · September 9, 2010, 08:11

A very simple example to start from is the basic solver of "scalarTransportFoam". You can change this for your own problem.

T.D. · September 9, 2010, 14:35

Thanks Mahdi, but i am really new to OpenFOAM , i will be thankful if you can write for me at least the text code that i must put in the solver, because i like that: a person more experienced with openFOAM to write them for me

Thanks a lot

T.D. · September 11, 2010, 13:57

Hi,
I need help, please?

I am new to OpenFOAM,
I have a new model,
and i need to know how exactly "to write in text the equations 1 and 2" to solve them ( in cylindrical coord)
see the attached jpeg file

Thanks a lot.

ata · September 12, 2010, 04:02

Hi
I think you can use icoFoam solver for instruction.
Best regards

rieuk · September 12, 2010, 05:55

T.D. I'm afraid you won't find anyone willing to write it up for you here, so you've got to do the hard yards - start tinkering with icoFoam for example and find out how everything works.

T.D. · September 12, 2010, 10:08

thanks a lot

alberto · September 12, 2010, 23:10

Well, the implementation is trivial in cartesian coordinates, which is what you should use in OpenFOAM.

Why do you want to use cylindrical coordinates? You can solve them in cartesian coordinates and represent your geometry in 3D, which is anyway a good idea to keep the model general.

Best,

T.D. · September 13, 2010, 06:09

Quote:

Originally Posted by alberto

Well, the implementation is trivial in cartesian coordinates, which is what you should use in OpenFOAM.

Why do you want to use cylindrical coordinates? You can solve them in cartesian coordinates and represent your geometry in 3D, which is anyway a good idea to keep the model general.

Best,

Hi, i need Cylindrical coordinates because, my flow is a flow between two disks where one is rotating and the other one is stationary.

niklas · September 13, 2010, 07:38

If you are wondering why your other posts have disappeared, its beacuse I have removed them.

Posting the exact same question in different threads will not help you or anyone trying to help you when the topic is spread out over multiple thread.

T.D. · September 13, 2010, 09:09

Quote:

Originally Posted by niklas

If you are wondering why your other posts have disappeared, its beacuse I have removed them.

Posting the exact same question in different threads will not help you or anyone trying to help you when the topic is spread out over multiple thread.

sorry, but you know i am new here, ok i am so sorry.
thanks

September 12, 2010, 04:02	A New Model Implementation	#7
ata Senior Member ata kamyabi Join Date: Aug 2009 Location: Kerman Posts: 323 Rep Power: 17	Hi I think you can use icoFoam solver for instruction. Best regards

September 12, 2010, 23:10		#10
alberto Senior Member Alberto Passalacqua Join Date: Mar 2009 Location: Ames, Iowa, United States Posts: 1,912 Rep Power: 36	Well, the implementation is trivial in cartesian coordinates, which is what you should use in OpenFOAM. Why do you want to use cylindrical coordinates? You can solve them in cartesian coordinates and represent your geometry in 3D, which is anyway a good idea to keep the model general. Best, __________________ Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using.

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September 8, 2010, 11:48		#2
smehdi609 Member M. Mahdi Salehi Join Date: Mar 2009 Location: Vancouver, BC, Canada Posts: 50 Rep Power: 17	Hi, yes, you can solve these equations, this is indeed the power of OpenFOAM, you can write all your solver in one simple C++ file. All the Calculus operators that you need is defined in OpenFOAM. You only need to use them. Once you write your solver, it is general, you can apply that to cylindrical geometries or whatever geometry that you have. You should spend some time and look at some simple solvers. Mahdi

September 8, 2010, 17:17		#3
T.D. Senior Member Join Date: Sep 2010 Posts: 226 Rep Power: 16	Thank you very much Mahdi but i like someone really to write the text for me , in order not to make any mistake anyway thanks a lot

September 9, 2010, 08:11		#4
smehdi609 Member M. Mahdi Salehi Join Date: Mar 2009 Location: Vancouver, BC, Canada Posts: 50 Rep Power: 17	A very simple example to start from is the basic solver of "scalarTransportFoam". You can change this for your own problem.

September 9, 2010, 14:35		#5
T.D. Senior Member Join Date: Sep 2010 Posts: 226 Rep Power: 16	Thanks Mahdi, but i am really new to OpenFOAM , i will be thankful if you can write for me at least the text code that i must put in the solver, because i like that: a person more experienced with openFOAM to write them for me Thanks a lot

September 12, 2010, 05:55		#8
rieuk Senior Member Pavan Join Date: May 2009 Location: Melbourne Posts: 101 Rep Power: 16	T.D. I'm afraid you won't find anyone willing to write it up for you here, so you've got to do the hard yards - start tinkering with icoFoam for example and find out how everything works.

September 12, 2010, 10:08		#9
T.D. Senior Member Join Date: Sep 2010 Posts: 226 Rep Power: 16	thanks a lot

September 13, 2010, 07:38		#12
niklas Super Moderator Niklas Nordin Join Date: Mar 2009 Location: Stockholm, Sweden Posts: 693 Rep Power: 29	If you are wondering why your other posts have disappeared, its beacuse I have removed them. Posting the exact same question in different threads will not help you or anyone trying to help you when the topic is spread out over multiple thread.