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

Which multiphase flow to solve this problem?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 30, 2014, 07:39
Default Which multiphase flow to solve this problem?
  #1
Senior Member
 
Join Date: Jan 2011
Posts: 339
Rep Power: 16
mariam.sara is on a distinguished road
Hello I am tried to solve nanofluid problem with base fluid water and Al2O3 as particles flowing into a pipe I want to predict heat transfer coefficient and temperature distribution at the pipe wall which multiphase flow model is better to solve my problem?
mariam.sara is offline   Reply With Quote

Old   April 30, 2014, 09:58
Default
  #2
Member
 
Camilo Costa
Join Date: Jun 2009
Posts: 34
Rep Power: 16
camilo_costa is on a distinguished road
I think your problem is not difficult to resolve!! Choose a eulerian model and set the second fluid as a granular!!!
camilo_costa is offline   Reply With Quote

Old   April 30, 2014, 10:12
Default
  #3
Senior Member
 
Join Date: Jan 2011
Posts: 339
Rep Power: 16
mariam.sara is on a distinguished road
Thanks a lot Costa for the answer. I need to ask I have solid particles of Al2O3 can fluent treat it as another phase? I took your advise about granular it need the granular viscosity the default value is 1e-05 and granular bulk viscosity (which i do not know?) how much i set its value?
mariam.sara is offline   Reply With Quote

Old   May 4, 2014, 11:04
Default
  #4
Member
 
Camilo Costa
Join Date: Jun 2009
Posts: 34
Rep Power: 16
camilo_costa is on a distinguished road
Quote:
Originally Posted by mariam.sara View Post
Thanks a lot Costa for the answer. I need to ask I have solid particles of Al2O3 can fluent treat it as another phase? I took your advise about granular it need the granular viscosity the default value is 1e-05 and granular bulk viscosity (which i do not know?) how much i set its value?
Yes Al2O3 will be treat as another phase. You have in fluent two model for modeling dispersed solids particles:
1™ Eulerian model (granular)
2™ Mixture model (granular)
If you have much interation (contact) between the solid particles and the volume fraction is high i dont remeber but i think the Eurelian is more apropriate. In another case use Mixture model. Look this paper:
http://mech.vub.ac.be/thermodynamics...ryk_Widera.pdf
camilo_costa 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
about choosing Turbulence model for multiphase flow problem. Near FLUENT 5 April 11, 2019 04:24
SetFieldsDict file problem with 3D multiphase flow jeff_87 OpenFOAM Pre-Processing 11 May 3, 2013 06:20
transient, impregnating flow problem fgommer FLUENT 0 February 29, 2012 16:10
problem with multiphase flow sri FLUENT 4 July 24, 2007 06:56
Poiseuille flow problem Rosie FLUENT 1 December 6, 2002 16:52


All times are GMT -4. The time now is 08:06.