Experimental verification

jagan1mohan · January 4, 2023, 14:16

Hi All, I'm using multiPhaseEulerFoam in version 10 to simulate a laminar fluidized bed flow.

I've setup a CFD-DEM case using OpenFOAM-LIGGGHTS and able to capture what I see in lab experiments, both quality and quantity.

When I do the same in multiPhaseEulerFoam, with settings adapted from laminar fluidized bed tutorial, the solver does not capture the basic flow hydrodynamics itself.

We are well aware that there are a number of settings here and I started from a tutorial setup. Anyone has experience or ideas where to start from? Is it frictional or kinetic? Any publications, literature on tuning a solver are also helpful.

Best,

dlahaye · January 9, 2023, 05:21

See bibliography of

https://repository.tudelft.nl/island...tion=education

jagan1mohan · January 18, 2023, 23:11

Hello Prof., thank you for this report. A quick question: on page 18, in 2D simulation using OpenFOAM, perhaps drum is rotating. Did you see "material" moving tangentially along drum circumference? (I'm having a setup in V10 multiphaseeulerfoam with moving boundary and I dont see any material moving in that direction. I'm thinking what could be issue?)

Could you please elaborate on this "A normal velocity with respect to the cylinder wall was defined as a boundary condition for the granular phase"?

Thank you,

dlahaye · January 20, 2023, 06:32

DEM simulations were performed using LIGGGHTS software.

Affermative, yes, drum. is rotating.

Should check for other question.

jagan1mohan · January 23, 2023, 10:46

Hi Prof., thank you for your response. I'm rephrasing my question:

On page 18, is Figure 2-2 from 2D simulation using multiphaseEulerFoam? I'm curious about U.air (or liquid) and U.particles boundary condition on drum wall. Could you please share these details? Did you see "material" moving tangentially along drum circumference?

I've raised another thread on issues I'm facing in multiphaseEulerFoam. Could you please take a look, whenever you get a chance?

Moving wall not working in multiphaseEulerFoam

Thank you,

January 4, 2023, 14:16	Experimental verification	#1
jagan1mohan New Member Jagan Mohan Join Date: Dec 2019 Location: New York Posts: 27 Rep Power: 7	Hi All, I'm using multiPhaseEulerFoam in version 10 to simulate a laminar fluidized bed flow. I've setup a CFD-DEM case using OpenFOAM-LIGGGHTS and able to capture what I see in lab experiments, both quality and quantity. When I do the same in multiPhaseEulerFoam, with settings adapted from laminar fluidized bed tutorial, the solver does not capture the basic flow hydrodynamics itself. We are well aware that there are a number of settings here and I started from a tutorial setup. Anyone has experience or ideas where to start from? Is it frictional or kinetic? Any publications, literature on tuning a solver are also helpful. Best,

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January 9, 2023, 05:21		#2
dlahaye Senior Member Domenico Lahaye Join Date: Dec 2013 Posts: 802 Blog Entries: 1 Rep Power: 18	See bibliography of https://repository.tudelft.nl/island...tion=education

January 18, 2023, 23:11		#3
jagan1mohan New Member Jagan Mohan Join Date: Dec 2019 Location: New York Posts: 27 Rep Power: 7	Hello Prof., thank you for this report. A quick question: on page 18, in 2D simulation using OpenFOAM, perhaps drum is rotating. Did you see "material" moving tangentially along drum circumference? (I'm having a setup in V10 multiphaseeulerfoam with moving boundary and I dont see any material moving in that direction. I'm thinking what could be issue?) Could you please elaborate on this "A normal velocity with respect to the cylinder wall was defined as a boundary condition for the granular phase"? Thank you,

January 20, 2023, 06:32		#4
dlahaye Senior Member Domenico Lahaye Join Date: Dec 2013 Posts: 802 Blog Entries: 1 Rep Power: 18	DEM simulations were performed using LIGGGHTS software. Affermative, yes, drum. is rotating. Should check for other question.

January 23, 2023, 10:46		#5
jagan1mohan New Member Jagan Mohan Join Date: Dec 2019 Location: New York Posts: 27 Rep Power: 7	Hi Prof., thank you for your response. I'm rephrasing my question: On page 18, is Figure 2-2 from 2D simulation using multiphaseEulerFoam? I'm curious about U.air (or liquid) and U.particles boundary condition on drum wall. Could you please share these details? Did you see "material" moving tangentially along drum circumference? I've raised another thread on issues I'm facing in multiphaseEulerFoam. Could you please take a look, whenever you get a chance? Moving wall not working in multiphaseEulerFoam Thank you,