Lagrangian Multiphase model

niuprats · October 2, 2012, 23:20

Hello All

Does anyone here has an experience working in Lagrangian Multiphase model in STAR CCM+ 7.04.011??

If yes please can you reply to the post ASAP.

Thank you for your time and help in Advance.

siara817 · October 3, 2012, 03:51

Can you explain that what is the problem.

niuprats · October 3, 2012, 14:30

Hey Saira817

Thanks for getting back.

I'm actually trying to model lagrangian multiphase model with mesh morphing.
Im working on bridge pier scouring ,two-phase sediment transport,using lagragian model along with mesh morphing.Here,im trying to entrain the sand particle from the bed using erosion rate field function as well as move the bed using some grid velocity.
But while running this i get this error in the attached file.

Regards

siara817 · October 4, 2012, 04:40

Do you mean that you have used erosion model to cause erosion of sediment? what is the particle phase in the water?

niuprats · October 4, 2012, 04:52

Yes exactly,erosion model in Lagrangian phase which is solid particle with 0.00025 m of diameter and 2650 density.

siara817 · October 5, 2012, 05:14

Actually, I do not know what is wrong in this case. But, in erosion, erosion happens on a surface by some particles. What is surface material and what is particle material?

niuprats · October 8, 2012, 17:57

Well ,my bed surface is a sand sediment,and particles are sand.
I defined the bed surface as wall, in order to calculate the wall shear stress.

Ayush Jain · June 4, 2015, 08:13

Hi niuprats,

I have a doubt that erosion is actually a long time process, so if you want to model
changing the geometry using morphing, how will you decide your physical time and time step.

bin_naqkse_kadam · September 26, 2023, 09:06

Can we set lagrangian phase to be initially present in cfd domain?

October 2, 2012, 23:20	Lagrangian Multiphase model	#1
niuprats New Member Join Date: Oct 2012 Posts: 4 Rep Power: 14	Hello All Does anyone here has an experience working in Lagrangian Multiphase model in STAR CCM+ 7.04.011?? If yes please can you reply to the post ASAP. Thank you for your time and help in Advance.

September 26, 2023, 09:06		#9
bin_naqkse_kadam New Member Turbo_jet_Noida Join Date: Nov 2022 Posts: 7 Rep Power: 4	Can we set lagrangian phase to be initially present in cfd domain? __________________

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October 3, 2012, 03:51		#2
siara817 Senior Member siamak rahimi ardkapan Join Date: Jul 2010 Location: Copenhagen, Denmark Posts: 220 Rep Power: 18	Can you explain that what is the problem.

October 4, 2012, 04:40		#4
siara817 Senior Member siamak rahimi ardkapan Join Date: Jul 2010 Location: Copenhagen, Denmark Posts: 220 Rep Power: 18	Do you mean that you have used erosion model to cause erosion of sediment? what is the particle phase in the water?

October 4, 2012, 04:52		#5
niuprats New Member Join Date: Oct 2012 Posts: 4 Rep Power: 14	Yes exactly,erosion model in Lagrangian phase which is solid particle with 0.00025 m of diameter and 2650 density.

October 5, 2012, 05:14		#6
siara817 Senior Member siamak rahimi ardkapan Join Date: Jul 2010 Location: Copenhagen, Denmark Posts: 220 Rep Power: 18	Actually, I do not know what is wrong in this case. But, in erosion, erosion happens on a surface by some particles. What is surface material and what is particle material?

October 8, 2012, 17:57		#7
niuprats New Member Join Date: Oct 2012 Posts: 4 Rep Power: 14	Well ,my bed surface is a sand sediment,and particles are sand. I defined the bed surface as wall, in order to calculate the wall shear stress.

June 4, 2015, 08:13		#8
Ayush Jain New Member Ayush Jain Join Date: Nov 2014 Posts: 16 Rep Power: 12	Hi niuprats, I have a doubt that erosion is actually a long time process, so if you want to model changing the geometry using morphing, how will you decide your physical time and time step.