[wyldckat]

Originally Posted by Tobi

Hi Tom,

yea i thought that too, couse the files are the same,... just having more species in it. Well in two weeks when I have my new flat I ll be able to try around with the files at home. Its a pitty that I am too late for the 7th Workshop. It would be very nice to meet you too, tom.

Tobi

Uhm, you have till 8th of June:

Originally Posted by holger_marschall

With this notification we mainly would like to remind you that the registration period has been extended to June 17, 2012. However, in order to assist our organizational efforts, register no later than June 8, 2012: We can not guarantee that registration is open after June 8, 2012, due to space limitation and planning reliability. Therefore, please register at your earliest convenience.

[Tobi]

Hi all,

f.y.i. "i am working on it"
Additionall I have an extension for the solver that gives out all the physical values. I ll spend some time to study the additional "COPY Folder" in the hPdfThermo folder.

Tobi

[Tobi]

Hi tom,

just one question. Do you ever run complex combustion (complex geometry) with that flamelet model? Couse I get values for csiv2 to e+123 and if you are correct csiv2 just can be in the range from 0 to 0.25, defined by the beta-pdf.

[tomf]

Hi Tobi,

I did not consider a very complex geometry yet, but did use the GRI 3.0 mechanism on some occasions, did not run into such high values. You may want to check your mesh or schemes you use? I think the tutorials use some bounding and have a nice quality mesh, which may help you there.

By the way, I managed to talk to one of the people behind the library (and their project) during the OpenFOAM workshop and they will release an update of their work probably around September. They were not aware of this thread as far as I know, since they did not know it was possible to run their solver in version 2.1.

Regards,
Tom

[Tobi]

hi, that sound good but I have to be finished with the masterthesis in september well I think I can not use that for my simulation but I hope that I have time to study the new version of the flamelet solver

[Tobi]

Hi tom,

are you a bit familiar with the flamelet model?
I am searching for the definition of chi and whats that used for. Especially I saw that Cuoci is calculating a Gaussian Chi over an fixed Chi (in the flamelets). I do not understand these calculation ... arrggg

Thats a pity

[Tobi]

Hi all,

just a little update to you.
Well I have no time for programming the gui for the flamelet generation couse of my masterthesis and other things I have to do for my study. Its frozen but I ll work on it if I have time.

Today I had a look at the additional folder "hPdfThermo (copy)". The difference (in the first inside-look) is, that you calculate soot formation in the solving process. He is using source terms for doing that but I need more time to get familiar with that stuff..

Tobi

[Tobi]

Hi Foamers,

there is (maybe) a bug in the chi_distribution. So if you wanna set the pdf format to logNormal the calculation could be not correct. I wrote to Alberto again and asked him if I am right but he is (still) not answering. If I can trust the documentation and the equations about the log-normal function then the calculation should be wrong but I am not sure about my interpretation about that.


Tobi

[nichkoohi]

hi tobi
just see the site: https://github.com/wyldckat/libOpenSMOKE

it is really helpful

[wyldckat]

Greetings nichkoohi,

Originally Posted by nichkoohi

hi tobi
just see the site: https://github.com/wyldckat/libOpenSMOKE

it is really helpful

If you had checked the first posts on this thread, you would have seen that Tobi is already using the code from that site!

And I didn't provide there any more instructions about this subject, simply because I don't know anything else about libOpenSMOKE, so can you be more specific in why you're making that suggestion?

Or perhaps you pasted the wrong link?

Best regards,
Bruno

[Tobi]

Originally Posted by nichkoohi

hi tobi
just see the site: https://github.com/wyldckat/libOpenSMOKE

it is really helpful

Hi nichkoohi,

well that site is helpful for compiling the libraries and solvers. But if you wanna know how all that stuff is working then you have to consider the User-Guide of that tool or ask me. I am completely familiar with that code (after studying 3 month - so I think I know everything except the soot formation ) and made an extension for getting all physical-values out of the PDF`s. Its not necessary for the solution but maybe for validation or sth. like that.

Tobi

[Tobi]

Hi all,

please notice that the flamelet-lib has a very big BUG in the thermodynamics if you wanna solve in multiple enthalpy defects. I solved the problem and made a validation and I fit the measurements very perfect. Really!!!

Unfortunately I am at the end of my masterthesis time, so I have no time to make the validation for now.

At least I ll bring a new flamelet-lib including:

- laminarFlameletSolver (steady-state)
- turbulentFlameletSolver (steady-state)
- validation case
- cleaned solver and libs
- validation of the corrected thermodynamic model compared with the now implemented model
- share a little tool for simplify flamelet calculation of several enthalpydefects and creating all automatically


I think I ll get it at the end of nov-jan

Adiabatic MODE works fine!

Regards Tobi

[Tobi]

Originally Posted by wyldckat

Hi Tobi and Tom,
laminarSMOKE: A computational framework for the modeling of laminar flows with detailed kinetic mechanisms; A. Cuoci, A. Frassoldati, T. Faravelli, E. Ranzi
Bruno

Does anyone know about that work?
I am building a laminarFlameletSolver too but I dont wanna make the work twice.

Tom, you told me that there ll be an update of the CRECK homepage, arent you?

Tobi

[tomf]

Hi Tobi,

Well if I remember correctly I passed on the message that there was to be an overhaul of the whole openSMOKE library including new developments. However I am not sure how they plan to release it and how hard it will be to find it.

At the moment I am not working on any projects that involve combustion, so I have not been looking for an update on their work. Just closely following this thread in case something interesting pops up.

I think the best way would be to try and contact them somehow.

Regards,
Tom

[Tobi]

Originally Posted by tomf

Hi Tobi,

Well if I remember correctly I passed on the message that there was to be an overhaul of the whole openSMOKE library including new developments. However I am not sure how they plan to release it and how hard it will be to find it.

At the moment I am not working on any projects that involve combustion, so I have not been looking for an update on their work. Just closely following this thread in case something interesting pops up.

I think the best way would be to try and contact them somehow.

Regards,
Tom

Hi
I wrote several times to A.Cuoci but he never wrote back

[tomf]

That is unfortunate.

When I have some time I may get back into this, but I do not have it at the moment.

[Tobi]

Hi tom,

I wrote to him last week to tell him that I found a bug in the solver. Well I think he know that but it would be very nice that he let me know that he recognize my mail.

Well I am working with his tool since 7 month now and know all about the work, extraction, math description and so on. I ll update his tool in a few weeks but I am not sure if my work is worth couse if he bring out a new lib without bugs and new solvers/libs/features ... you know what I mean


In the attachment is the validation + bug and corrected hPdfThermo lib.

Tobi

[wyldckat]

Greetings to all!

Originally Posted by Tobi

I wrote to him last week to tell him that I found a bug in the solver. Well I think he know that but it would be very nice that he let me know that he recognize my mail.

I can only assume that he's probably so busy that he can't even read emails properly, let alone answer them.

Originally Posted by Tobi

Well I am working with his tool since 7 month now and know all about the work, extraction, math description and so on. I ll update his tool in a few weeks but I am not sure if my work is worth couse if he bring out a new lib without bugs and new solvers/libs/features ... you know what I mean

Perhaps a certain popular expression will appease your mind:

Originally Posted by http://www.wisegeek.com/what-does-it-mean-to-count-your-chickens-before-they-hatch.htm

Don’t count your chickens before they hatch is an old adage which means, broadly, don’t act as though you have something before you actually have it.

In other words: the new library they are developing might only come out next year, if things don't go as smoothly as they wanted it to go.
Or even if they do launch it in the next couple of weeks, that doesn't mean that it won't have bugs. And if it's a whole new library, you could end up spending even more time trying to find and fix new bugs and to validate everything once again.

Therefore, it's probably better to do the best you can with what you have. Further more, it might be more fruitful for you, if you turn instead to other Universities closer to you and look for teachers and Phd students that are working on combustion and possibly OpenFOAM or some other CFD application!

Best regards and good luck!
Bruno

[Tobi]

Originally Posted by wyldckat

Greetings to all!


I can only assume that he's probably so busy that he can't even read emails properly, let alone answer them.



Perhaps a certain popular expression will appease your mind:

In other words: the new library they are developing might only come out next year, if things don't go as smoothly as they wanted it to go.
Or even if they do launch it in the next couple of weeks, that doesn't mean that it won't have bugs. And if it's a whole new library, you could end up spending even more time trying to find and fix new bugs and to validate everything once again.

Therefore, it's probably better to do the best you can with what you have. Further more, it might be more fruitful for you, if you turn instead to other Universities closer to you and look for teachers and Phd students that are working on combustion and possibly OpenFOAM or some other CFD application!

Best regards and good luck!
Bruno

Hi Bruno.
Yes you are right. I ll spend some more time to fix the bug in the flamelet solver and keep on working on that stuff. After I finished it, I `ll post it and make it avaiable for everyone + validation. Further more (if I get time) I ll write a documentation about the solver/libs and how everything is working.


Its a pitty that I am not able to publish my masterthesis


Regards Tobi

[wyldckat]

Originally Posted by Tobi

Its a pitty that I am not able to publish my masterthesis

You can always provide a bibliographic reference and on which library or Institute it's available, so that people can go there and request access to your thesis.
Unless of course if the document is binded by confidentiality agreements and corporate trade secrets...