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

FLUENT two-phase mixture method for nanofluids

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

Like Tree1Likes
  • 1 Post By Lancashire

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 12, 2016, 13:47
Default FLUENT two-phase mixture method for nanofluids
  #1
New Member
 
Andrew Vella
Join Date: Feb 2015
Posts: 12
Rep Power: 11
Lancashire is on a distinguished road
I need to compare results for a simulation with nanofluids in a coiled tube using the single-phase and the two-phase mixture methods in FLUENT. The single-phase method works perfectly well. However, I am confused with the development of the two-phase Mixture model. The pertinent literature states that the fluid properties need to be defined through the use of the effective properties (as in the single-phase simulations). Hence, I am not sure how to define the model in FLUENT.

Therefore, if we define a Mixture model with two-phases, my understanding is that the base fluid properties (water) will be defined with UDF’s for the effective properties. Then how can be define the properties of the nanoparticles i.e. The second phase?

Am I right to assume that for the second phase, the granular option needs to be activated? This will then allow us to define the diameter….
pankajadgjmp likes this.
Lancashire is offline   Reply With Quote

Old   October 18, 2016, 10:55
Default
  #2
New Member
 
Andrew Vella
Join Date: Feb 2015
Posts: 12
Rep Power: 11
Lancashire is on a distinguished road
Hello! Is there anyone out there who is able to give a hand with this
Lancashire is offline   Reply With Quote

Old   October 19, 2016, 12:44
Default hi my friend
  #3
New Member
 
hassan
Join Date: Jul 2015
Posts: 3
Rep Power: 10
bazaee is on a distinguished road
send your case&data for me.
i can fix it for you.
best regard
bazaee is offline   Reply With Quote

Old   October 19, 2016, 12:45
Default my email address
  #4
New Member
 
hassan
Join Date: Jul 2015
Posts: 3
Rep Power: 10
bazaee is on a distinguished road
Bazaee.Hassan@gmail.com
bazaee is offline   Reply With Quote

Old   April 4, 2017, 04:53
Smile
  #5
New Member
 
pankaj sharma
Join Date: Feb 2016
Posts: 9
Rep Power: 10
pankajadgjmp is on a distinguished road
why udf ?
simply select water as your primary fluid. And yes granular needs to be activated.
i have done this but the simulation has failed till now because if i set the dia as e^-9. And if i set it around e^-6 or above the simulation runs fine.

if you have any answer to the above problem please let me know.

accessaccount32@hotmail.com

thanks
pankajadgjmp is offline   Reply With Quote

Old   April 4, 2017, 04:54
Default
  #6
New Member
 
pankaj sharma
Join Date: Feb 2016
Posts: 9
Rep Power: 10
pankajadgjmp is on a distinguished road
did you find any solution??
pankajadgjmp is offline   Reply With Quote

Old   April 5, 2021, 11:09
Default
  #7
New Member
 
Join Date: Apr 2021
Posts: 1
Rep Power: 0
Taheri is on a distinguished road
Quote:
Originally Posted by Lancashire View Post
I need to compare results for a simulation with nanofluids in a coiled tube using the single-phase and the two-phase mixture methods in FLUENT. The single-phase method works perfectly well. However, I am confused with the development of the two-phase Mixture model. The pertinent literature states that the fluid properties need to be defined through the use of the effective properties (as in the single-phase simulations). Hence, I am not sure how to define the model in FLUENT.

Therefore, if we define a Mixture model with two-phases, my understanding is that the base fluid properties (water) will be defined with UDF’s for the effective properties. Then how can be define the properties of the nanoparticles i.e. The second phase?

Am I right to assume that for the second phase, the granular option needs to be activated? This will then allow us to define the diameter….
Hi
I have a problem similar to yours. Were you able to solve it?
Taheri 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
multiphaseEulerFoam: method iter() and calculation of phase fractions maybee OpenFOAM Programming & Development 1 July 22, 2020 09:20
2 Phase Flow, Gas Jet into Water Simulation Method im_lenny OpenFOAM 3 May 4, 2017 04:20
three phase simulation in fluent monababaei Fluent Multiphase 6 October 3, 2015 03:59
[swak4Foam] mass conservation of solid phase violated when using groovyBC with twoPhaseEulerFoam xpqiu OpenFOAM Community Contributions 8 June 17, 2015 03:08
Ghost Fluid Method in Fluent ndabir FLUENT 0 February 3, 2015 09:44


All times are GMT -4. The time now is 23:24.