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How can I make a particle reach a wall as close as possible in FLUENT DPM? |
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July 7, 2015, 03:39 |
How can I make a particle reach a wall as close as possible in FLUENT DPM?
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#1 |
New Member
Jasvir
Join Date: Jun 2015
Posts: 5
Rep Power: 11 |
Hey everyone,
I am modelling a solidification problem where we are tracking how inclusions move in a caster. They are represented by inert particles and I needed a way by which I can make a particle reach a wall/front as close as possible so that the distance between the particle and the wall is in nanometer scale. I am using*steady particle tracking and my distance comes out to be of order of 10^(-5)m. Even after changing the step length factor the distance comes out to be of the same order. |
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July 7, 2015, 05:40 |
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#2 |
New Member
Join Date: Apr 2015
Posts: 28
Rep Power: 11 |
Try to decrease the tolerance in tracking parameters in DPM model (numerics if I remember well)
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June 10, 2022, 06:29 |
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#3 | |
New Member
echo
Join Date: Jun 2022
Posts: 7
Rep Power: 4 |
Quote:
My code is as follows: 1. When the volume fraction of liquid phase encountered by the particles is less than 0.6, the particles are considered to be captured by the solidified shell of liquid steel. #include"udf.h" DEFINE_DPM_LAW(stop_dpm_law,p,ci) { real fl; cell_t c=P_CELL(p);/* Get the cell and thread that the particle is currently in */ Thread *t=P_CELL_THREAD(p);/* pointer to the thread of the cell that the particle is currently in*/ fl=C_LIQF(c,t);/* liquid fraction in a cell*/ if(fl<=0.6) P_VEL(p)[0]=0.0,/* particle velocity component. */ P_VEL(p)[1]=0.0, P_VEL(p)[2]=0.0; else return P_VEL(p); } What are the problems in my code? Please help me. Thank you! |
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Tags |
boundary condition, dpm in fluent, fluent udfs, solidification/melting |
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