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

Initial conditions for solid granular phase in Eulerian multiphase flow

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

LinkBack Thread Tools Search this Thread Display Modes
Old   May 24, 2022, 11:42
Default Initial conditions for solid granular phase in Eulerian multiphase flow
New Member
Bharath Vittal
Join Date: May 2022
Posts: 1
Rep Power: 0
Bharath_vittal is on a distinguished road

I am using Eulerian Multiphase physics to model multiphase counter flow in blast furnace. I am trying to run a steady state case in which a solid granular phase enters the domain from the top and exits the domain at the bottom. The gas phase enters the domain from the bottom and exits at the top. The detailed geometry cannot be specified here because of confidential reasons. All the material properties are obtained from literature.
Boundary conditions: For simplicity reason, the gas inlet velocity is set as 0 and a mass flow rate is specified at the top for the solid phase. Volume fraction for solid solid phase is specified both at inlet and outlet. Top pressure is atmospheric.

My question is regarding the initial conditions:
I am only specifying the velocity and volume fraction for solid granular phase. The velocity is calculated from the inlet mass flow rate. Any value of solid phase volume fraction above 0 throws a floating point error, whereas a with a zero solid volume fraction, the simulation runs, but does not converge. Could anyone throw some light into the reasons behind floating point error for any solid volume fraction above 0? Moreover, how to initialise in such case, without being far away from the steady state solution?
Bharath_vittal is offline   Reply With Quote


eulerian multiphase, fluent 19, granular flow, initial conditions

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
Compressible flows with larger Courant numbers Tobi OpenFOAM Running, Solving & CFD 5 February 26, 2021 16:20
laplacianFoam with source term Herwig OpenFOAM Running, Solving & CFD 17 November 19, 2019 14:47
chtMultiRegionSimpleFoam turbulent case Aditya Patil OpenFOAM Running, Solving & CFD 6 April 24, 2017 23:13
pimpleFoam: turbulence->correct(); is not executed when using residualControl hfs OpenFOAM Running, Solving & CFD 3 October 29, 2013 09:35
pisoFoam with k-epsilon turb blows up - Some questions Heroic OpenFOAM Running, Solving & CFD 26 December 17, 2012 04:34

All times are GMT -4. The time now is 11:27.