
[Sponsors] 
May 10, 2011, 16:00 
ParticleLaden Flow Tutorial

#1 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
Dear all,
I have a question related to ParticleLaden Flow Tutorial. in this tutorial the starccm+ partially blocked elbow duct is used to simulate ParticleLaden Flow. i do not know how to find that in which way the duct geometry was created, i want to know if that duck is solid or has thickness. because i am going to simulate in ParticleLaden Flow in pipe so do have to create a solid cylinder (one circle and extrude it) or as pipe has a thickness ( two circle subtract them and then extrude it ). Thanks for your help 

May 10, 2011, 17:55 

#2 
Senior Member
Join Date: Apr 2009
Posts: 156
Rep Power: 17 
That particular duct is a solid. Unless you are modeling heat transfer through the wall, then geometric wall thickness is not required.


May 11, 2011, 03:25 

#3 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
Thanks fw
in my case i want to model the erosion in pipe which liquid( oil) and sand are inside the pipe, do i have to create a solid geometry of pipe or creating a pipe with specific thickness?? kind regards, alan 

May 11, 2011, 11:45 

#4 
Senior Member
Join Date: Apr 2009
Posts: 156
Rep Power: 17 
Create a solid pipe (the wall of which will be representative of the inner wall).


May 11, 2011, 11:48 

#5 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
Dear fw
Thanks for your respond, one more thing, how can i chose the material for the pipe?? is that possible to choose the martial of the pipe?? many thanks 

May 11, 2011, 16:46 

#6 
Senior Member
Join Date: Apr 2009
Posts: 156
Rep Power: 17 
I suggest you go through the "Modeling Erosion" tutorial, it should answer your questions.
Modeling Physics > Modeling Multiphase Flow > Using the Lagrangian Multiphase Model > Working with Lagrangian Phase Models > Modeling Erosion 

May 11, 2011, 18:00 

#7 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
Hi again,
thanks for your suggestion fw. yes its written that the erosion depends on the type of the wall material. when you choose the model of erosion, there is a material particle in the model but still i can not find the material of the wall. and i am not sure if BaiGosman that is what i am looking for or not. have a nice time 

May 11, 2011, 19:18 

#8 
Senior Member
Join Date: Apr 2009
Posts: 156
Rep Power: 17 
The wall material is taken care of using coefficients specified by the user in the erosion models. More info in: Modeling Physics > Modeling Multiphase Flow > Using the Lagrangian Multiphase Model > Formulation > Erosion
I found a good tutorial for you to follow: Training Guide > MultiPhase Flow Tutorials > Solid Particle Erosion Tutorial 

May 13, 2011, 04:15 

#9 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
Thanks fw
I still can not find where i have to change the material of the pipe itself. Do you know where i should change it?? Thanks 

May 17, 2011, 09:37 

#10 
Senior Member
Ryne Whitehill
Join Date: Aug 2009
Posts: 312
Rep Power: 18 

May 17, 2011, 11:48 

#11 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
Thanks rwryne for your answer, now its clear that the al is chosen as a default martial for the the pipe.
thanks again 

May 17, 2011, 13:41 

#12 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
hi rwryne,
but according to the tutorial that is the properties of the solid particle which entrained in the liquid which is written in the tutorial ((Sand particles are entrained in the liquid flow in this simulation and so the density of the Lagrangian phase must be set to the density of sand In the Continua > Physics 1 > Models > Lagrangian Multiphase > Lagrangian Phases > Phase 1 node, open the Models > Solid > Al > Material Properties > Density node and select the Constant node.)) so if that is the properties of particle, where should we change the properties of the pipe( in the tutorial is duct) best wishes 

May 17, 2011, 13:43 

#13 
Member
Join Date: Mar 2011
Posts: 33
Rep Power: 15 
those information are written in solid particle particle erosion tutorial


May 17, 2011, 14:45 

#14  
Senior Member
Ryne Whitehill
Join Date: Aug 2009
Posts: 312
Rep Power: 18 
Quote:
See this page in the help: Training Guide > MultiPhase Flow Tutorials > Solid Particle Erosion Tutorial > Setting Lagrangian Phase Boundary Conditions > Setting the Erosion Model specifically: Quote:


Thread Tools  Search this Thread 
Display Modes  


Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Modifying the "Transonic Flow over an Airfoil" tutorial for supersonic flow?  darrenn  STARCCM+  3  November 15, 2021 16:52 
mass flow in is not equal to mass flow out  saii  CFX  12  March 19, 2018 05:21 
Question from tutorial: Buoyant flow in a partitioned cavity  noppawit  CFX  13  March 19, 2014 02:18 
particle tracking in unsteady flow  peterchen  FLUENT  1  July 22, 2010 22:18 
Particle mass flow rate  Jeff  CFX  3  September 17, 2004 10:46 