CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

modelling via VOF

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 18, 2010, 06:09
Default modelling via VOF
  #1
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15
hamid1 is on a distinguished road
Hi

I am going to model a domain which include two cylinder which are located in each other, the inner cylinder is half of the other one in length,
I am going to consider two phase flow, the second flow is located partly in inner and outer cylinder, the second flow geometry is again like a cylinder.
my problem is after the simulation only the main phase is shown and in all the domain the second phase is zero, please let me know if there is any solution for that, I can send u the .case file in case if you want to see,
hamid1 is offline   Reply With Quote

Old   November 18, 2010, 06:20
Default
  #2
Senior Member
 
Philipov's Avatar
 
Svetlin Filipov
Join Date: Mar 2009
Location: United Kingdom
Posts: 176
Rep Power: 17
Philipov is on a distinguished road
use e-mails
Philipov is offline   Reply With Quote

Old   November 18, 2010, 06:30
Default
  #3
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15
hamid1 is on a distinguished road
Hi Philipov

I am new in this forum, can i send email and attach my case file through the options provided in this forum? otherwise would you let me know ur email address,

thanks
hamid1 is offline   Reply With Quote

Old   November 18, 2010, 06:51
Default
  #4
Senior Member
 
Philipov's Avatar
 
Svetlin Filipov
Join Date: Mar 2009
Location: United Kingdom
Posts: 176
Rep Power: 17
Philipov is on a distinguished road
Quote:
Originally Posted by hamid1 View Post
Hi Philipov

I am new in this forum, can i send email and attach my case file through the options provided in this forum? otherwise would you let me know ur email address,

thanks

svetlin.philipov@gmail.com
Philipov is offline   Reply With Quote

Old   November 19, 2010, 06:25
Default
  #5
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15
hamid1 is on a distinguished road
I tried like this according to "Define from File menu Autosave for cas and dat files and then use Tecplot" svetlin roccomendation but there come an error like "err bad value error accourred on line 4 near position marked with "@" below (4 (60 0 0 1 2 4 4 4 8 8 4 )@)

2. I dont know how to mark a region with completely desired shape and not the sphere or cylinder or tetrahedral shape available in fluent,

thanks very much if I could be informed by that;
hamid1 is offline   Reply With Quote

Old   November 19, 2010, 06:26
Default
  #6
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15
hamid1 is on a distinguished road
i mean for making a sequences of showing fluid motion through unsteady simulation ...
hamid1 is offline   Reply With Quote

Old   November 19, 2010, 06:41
Default
  #7
Senior Member
 
Philipov's Avatar
 
Svetlin Filipov
Join Date: Mar 2009
Location: United Kingdom
Posts: 176
Rep Power: 17
Philipov is on a distinguished road
when loading files in TECPLOT , use option for Fluent case and data file read.
I do not have Tecplot installed in front of me but ... see the options from the file menu... it is there.. do not just load case and data file...
Philipov is offline   Reply With Quote

Old   November 19, 2010, 07:08
Default
  #8
Member
 
JESS
Join Date: Nov 2010
Posts: 31
Rep Power: 15
Raijin Thunderkeg is on a distinguished road
U can work it with "Adapt->region" in fluent, if this method is not available, U can mark the region u want to patch in Gambit when U mesh the geometry. In Gambit, press "Continuity" button, choose the right volume then select the fluid and define it with a new name. When u load this mesh in fluent, u can see the region u just marked in Gambit in "solve->initial->patch->zones to patch", then u can patch it with the value u wanna to. Wish this will help U. Raijin.
Raijin Thunderkeg is offline   Reply With Quote

Old   November 20, 2010, 09:08
Default
  #9
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15
hamid1 is on a distinguished road
thanks very much for reply but still I have problem with capturing the fluid motion which could be done through fluent itself or using tecplot,
could you let me know step by step how can I do that with either of the upper way, cause I am new in fluent,
thank you very much in advance
hamid1 is offline   Reply With Quote

Old   November 20, 2010, 12:47
Default
  #10
Senior Member
 
Philipov's Avatar
 
Svetlin Filipov
Join Date: Mar 2009
Location: United Kingdom
Posts: 176
Rep Power: 17
Philipov is on a distinguished road
I told you.... use Autosave option from File menu->Write...
Then use (in Tecplot) From File menu->Load DataFile(s)... and then choose "Fluent data Loader "... There u can load all case and data files
Philipov is offline   Reply With Quote

Old   November 20, 2010, 14:56
Default
  #11
Senior Member
 
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15
hamid1 is on a distinguished road
Hi Stevlin

Thanks,
Maybe I make a mistake but as far as I see there is no “fluent data loader option” in File menu --> load data file, only I can load .dat and .plt, I used to load .dat but the problem is when I load it the error: “err bad value error accourred on line 4 near position marked with "@" below (4 (60 0 0 1 2 4 4 4 8 8 4 )@)” appears
My tecplot is version 8, I don’t know whats the problem?
hamid1 is offline   Reply With Quote

Old   November 21, 2010, 05:18
Default
  #12
Senior Member
 
Philipov's Avatar
 
Svetlin Filipov
Join Date: Mar 2009
Location: United Kingdom
Posts: 176
Rep Power: 17
Philipov is on a distinguished road
Yes... this is the problem lower versions do not have direct fluent data loader... and you have to export data to Tecplot from Fluent menu.... Down load the latest version of Tecplot360
Philipov is offline   Reply With Quote

Old   February 3, 2011, 17:19
Default
  #13
Member
 
daalou
Join Date: Feb 2011
Posts: 31
Rep Power: 15
alilouu is on a distinguished road
hi all
i used two phases into the gap (between two cylindres) air + benzene, well defined in gambit. but as aresult in the end of calculating, i always find one phase,, any help please
alilouu is offline   Reply With Quote

Old   February 4, 2011, 02:04
Default
  #14
Senior Member
 
Philipov's Avatar
 
Svetlin Filipov
Join Date: Mar 2009
Location: United Kingdom
Posts: 176
Rep Power: 17
Philipov is on a distinguished road
give some more details on the model you have. Tell more on BCs... how did you set up them?
Philipov is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Using VOF method for modelling multiphase separators speedy Main CFD Forum 0 June 4, 2009 04:56
VOF modelling of hydrocyclones sripriyarajendran FLUENT 0 March 16, 2009 23:02
vof modelling Sumeet FLUENT 0 September 10, 2005 11:08
Modelling flow around a ship's hull using vof Manoj Kumar FLUENT 0 February 26, 2005 16:22
Help in VOF modelling Will FLUENT 0 March 29, 2001 08:45


All times are GMT -4. The time now is 02:51.