CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Programming & Development

libOpenSMOKE

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree127Likes

Reply
 
LinkBack Thread Tools Display Modes
Old   May 28, 2013, 05:48
Default
  #181
New Member
 
Join Date: Feb 2013
Posts: 6
Rep Power: 4
danz is on a distinguished road
Hi Tobi!

I have my flamelet library(using CANTERA) now and I want to interpolate the temperatue over the mixture fraction and stoichiomertic scalar dissipation rate. My question is how do you interpolate the mixture fraction grid since you have different discretization of the flamelets (One have more discretization points near the exctinction).
In libOpenSmoke, I can just see the stoichiomertic scalar dissipation rate interpolation.

Thanks.

Best,

Danz
danz is offline   Reply With Quote

Old   May 28, 2013, 12:42
Default
  #182
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Quote:
Originally Posted by danz View Post
Hi Tobi!

I have my flamelet library(using CANTERA) now and I want to interpolate the temperatue over the mixture fraction and stoichiomertic scalar dissipation rate. My question is how do you interpolate the mixture fraction grid since you have different discretization of the flamelets (One have more discretization points near the exctinction).
In libOpenSmoke, I can just see the stoichiomertic scalar dissipation rate interpolation.

Thanks.

Best,

Danz

This is a area-weighted interpolation function! Have a look into the flamelet basic cpp file!
Tobi is offline   Reply With Quote

Old   June 8, 2013, 05:59
Default flameletPisoFoam
  #183
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Hi all,

I am very happy to tell everybody that I build the flameletPisoFoam solver.
The solver is running and in the attachment are the first results.

At the moment I am running the Sandia-Flame tutorial and hope that the case is running without problems.

If everything is working fine, I ll make a validation with the measurement data files and let you know how accurate the solver is working.


Regards,
Happy Tobi
Attached Images
File Type: jpg flameletPisoFoam.jpg (32.1 KB, 20 views)
File Type: jpg flameletPisoFoam_Residuals.jpg (35.9 KB, 20 views)
MPJ, immortality and babakflame like this.

Last edited by Tobi; June 8, 2013 at 10:47.
Tobi is offline   Reply With Quote

Old   June 8, 2013, 08:28
Default Update
  #184
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Hi all,

I think its done.
The solver is running without problems (attachment).
I ll let the testcase run until I get a steady-state solution and after that I am going to test the mixture fraction variance transport equation. At the beginning I had problems with that so I used the algebraic equation at the moment but it seems to work


Next steps:

  • Calculating till 1 second
  • Recalculating till 1 second with mixture fraction transport equation
  • Start calculation from steady-state solution (flameletSimpleFoam)
  • Compare steady and unsteady solution
  • Compare unsteady solution with measurements
  • Clean and upload the new solver + tutorial to the 2.2.x flamelet model on github


Tobi
Attached Images
File Type: jpg flameletPisoFoam_2.jpg (25.9 KB, 18 views)
File Type: jpg flameletPisoFoam_Resudials2.jpg (33.6 KB, 17 views)
MPJ, immortality and babakflame like this.
Tobi is offline   Reply With Quote

Old   June 8, 2013, 13:02
Default
  #185
Senior Member
 
Bobi
Join Date: Oct 2012
Posts: 286
Rep Power: 5
babakflame is on a distinguished road
Hi Tobi
Congratulations.
Can I ask how did you solve the problem of division by zero in pressure?


Bobi
babakflame is offline   Reply With Quote

Old   June 11, 2013, 06:30
Default
  #186
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Hi all,

  • flameletPisoFoam solver runs stable and gives better residual as the flameletSimpleFoam solver
  • Since yesterday I am working on the Validation of that solver and the comparision with the SIMPLE algo too. There is a Problem with my flameletSimpleFoam solver,... I dont know why the Validation with that solver is so bad (I did that Validation three times, with 1.7x, 2.1.x and 2.2.x )
    I think I made a mistake yesterday (too tired)
  • I ll upload the flameletPisoFoam solver hence everything is working without Problems
@Bobi:

I am not sure why I always get Problems building the transient solver. The only change is the PISO algo instead of the PIMPLE.

But at least I can not say if the solver works correct, since I don t get the validation.
Tobi is offline   Reply With Quote

Old   June 11, 2013, 06:37
Default
  #187
Senior Member
 
immortality's Avatar
 
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,205
Rep Power: 17
immortality is on a distinguished road
Hi
whree's the solver?
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King.
To Be or Not To Be,Thats the Question!
The Only Stupid Question Is the One that Goes Unasked.
immortality is offline   Reply With Quote

Old   June 11, 2013, 09:54
Default
  #188
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
I ll upload the solver here: github.com/shor-ty/flameletModel 2.2.x

But first of all I have to be sure that the solver is working correct. It makes no sence to share this solver without any Argument that it s calculating the values correct.


Tobi
immortality likes this.
Tobi is offline   Reply With Quote

Old   June 12, 2013, 17:03
Default
  #189
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Hi all,

first results are avaiable.
I made the validation with the following profiles:

- axial
- xD = 20
- xD = 40
- xD = 60

The solutions are very good. It seems that in the steady state flame area the flameltSimpleFoam gives a more accurate solution than the PISO foam. In some graphics you could see that the piso foam solver is getting a more accurate result.

At least I would say that both solvers are working fine at free-stream velocity flames.
If someone has an validation case for a complexed (twisted?) flow please let me know.


In a few days I ll upload everything.
Good night.
Tobi is offline   Reply With Quote

Old   June 15, 2013, 12:18
Default First Update - Validation
  #190
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Hi all,
see attachment!
Further information are comming.
Tobi is offline   Reply With Quote

Old   June 16, 2013, 15:49
Default
  #191
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Hi all,

here we go:

https://github.com/shor-ty/flameletModel-2.2.x

I updated my github and now it contains the new flameletPisoFoam solver + tutorial. Hope that I upated my github correct (not tested).

If you have problems - let me know.


Here is the validation:

http://www.holzmann-cfd.de/validatio...dationPiso.pdf

-------------------
2014-12-04 - Warning: The git repository was deleted. For the latest mirror repository, go to post #407
MPJ, immortality and babakflame like this.

Last edited by wyldckat; December 4, 2014 at 16:48. Reason: see "Warning:"
Tobi is offline   Reply With Quote

Old   June 16, 2013, 16:08
Default
  #192
Senior Member
 
immortality's Avatar
 
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,205
Rep Power: 17
immortality is on a distinguished road
how much is its volume?my browser is continuing to download.now is 25meg!
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King.
To Be or Not To Be,Thats the Question!
The Only Stupid Question Is the One that Goes Unasked.
immortality is offline   Reply With Quote

Old   June 17, 2013, 00:59
Default
  #193
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Its volume is 222 MB ... thats coused by the flamelet libs.

I ll try to link it to decrease the volume.

Tobi
Tobi is offline   Reply With Quote

Old   June 17, 2013, 07:48
Default
  #194
Senior Member
 
immortality's Avatar
 
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,205
Rep Power: 17
immortality is on a distinguished road
wow,then that was good that I discontinued it!
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King.
To Be or Not To Be,Thats the Question!
The Only Stupid Question Is the One that Goes Unasked.
immortality is offline   Reply With Quote

Old   June 17, 2013, 12:04
Default
  #195
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
Do you have a limitation of traffic ?

I updated my github and now the tool is about 77MB

Hope that is better - thanks for your hint!

Tobi
immortality and babakflame like this.
Tobi is offline   Reply With Quote

Old   June 30, 2013, 06:37
Default
  #196
Senior Member
 
Bobi
Join Date: Oct 2012
Posts: 286
Rep Power: 5
babakflame is on a distinguished road
Greetings to all

Does anybody else experienced problem with downloading Tobi code?
My Internet is 1 Mb/s ; however my download speed for pisofoamflamelet code is just 1 Kb/s
For God's sake, WHY?????

@Tobi

Thanks buddy for all you have done for flamelet researchers.
Did you take a look at my code?

Regards
Bobi
babakflame is offline   Reply With Quote

Old   June 30, 2013, 06:49
Default
  #197
Super Moderator
 
Bruno Santos
Join Date: Mar 2009
Location: Lisbon, Portugal
Posts: 8,521
Blog Entries: 34
Rep Power: 86
wyldckat is just really nicewyldckat is just really nicewyldckat is just really nicewyldckat is just really nice
Greetings to all!

Given Bobi's predicament, I've created a mirror repository at http://repo.or.cz/w/flameletModel-2.2.x.git

To git clone from it, use either one of the following commands:
  • Code:
    git clone git://repo.or.cz/flameletModel-2.2.x.git
  • Code:
    git clone http://repo.or.cz/r/flameletModel-2.2.x.git
For those who don't have git, use one of the snapshot links from here: http://repo.or.cz/w/flameletModel-2.2.x.git/tree

Best regards,
Bruno

-------------------
2014-12-04 - Warning: This repository was deleted. For the latest mirror repository, go to post #414
Tobi and babakflame like this.

Last edited by wyldckat; December 4, 2014 at 16:47. Reason: see "Warning:"
wyldckat is offline   Reply With Quote

Old   June 30, 2013, 11:25
Default
  #198
Senior Member
 
Bobi
Join Date: Oct 2012
Posts: 286
Rep Power: 5
babakflame is on a distinguished road
Many Thanks to Bruno
babakflame is offline   Reply With Quote

Old   July 2, 2013, 06:45
Default
  #199
Senior Member
 
Tobi's Avatar
 
Tobias Holzmann
Join Date: Oct 2010
Location: Leoben (Austria)
Posts: 1,100
Blog Entries: 6
Rep Power: 19
Tobi will become famous soon enough
Send a message via ICQ to Tobi Send a message via Skype™ to Tobi
I ll have a look at that Problem today evening!

I was offline for a while (many things to do )
immortality likes this.
Tobi is offline   Reply With Quote

Old   July 6, 2013, 01:00
Default
  #200
Senior Member
 
Bobi
Join Date: Oct 2012
Posts: 286
Rep Power: 5
babakflame is on a distinguished road
Hi Tobi
During Compiling flamelet model2.2.x , I confronted this error:

Code:
babak@babak-System:~/OpenFOAM/babak-2.2.x/flameletModel-2.2.x/applications/solvers/combustion/flameletSimpleFoam$ wmake
options:16:12: warning: backslash and newline separated by space [enabled by default]
linux64GccDPOpt/options:6: *** missing separator.  Stop.
wmake error: file 'Make/linux64GccDPOpt/objectFiles' could not be created in /home/babak/OpenFOAM/babak-2.2.x/flameletModel-2.2.x/applications/solvers/combustion/flameletSimpleFoam
Would you please help me

The libraries compiled successfully however it seems there is problem with both solvers compilation.

Regards
babakflame is offline   Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 22:01.