CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

missing mass from dpm model

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

LinkBack Thread Tools Search this Thread Display Modes
Old   March 23, 2005, 19:05
Default missing mass from dpm model
Jan Rusås
Posts: n/a
Dear Fluent user I am calculating a 3d problem with oil combustion. I have very big problems with obtaining the specififed mass flow. I use a pressure swirl injector but I do only get at maximum 10% of the mass specified, when I calculate the sum of the volume mass source from the DPM. If I do not included droplet collision and breakup I do not have any problems, but when I initiate coll. and breakup then does the mass vanish. I have tried to do the calculation on a simplified 2d model of my problem and I could get an solution in this case.

I have tried several things, number of particles per cell, injected number of particles, increasing the temperature, adjusting number of flow iterations, under relaxation etc.

Please share how you have solved this problem Thanks in advance Jan
  Reply With Quote


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
How to put melting point data of inert particle in DPM model of Fluent subhankar_bhandari Fluent UDF and Scheme Programming 1 February 5, 2018 08:08
DPM mass balance help jpinho FLUENT 1 April 25, 2014 07:48
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
Questions on DPM model..please panos_metal FLUENT 3 October 7, 2010 07:26
Missing Information in SST Transition Model Formulation Josh CFX 2 September 14, 2010 12:49

All times are GMT -4. The time now is 21:02.