UDF in DPM+Eulerian multiphase

CeesH · May 12, 2015, 11:35

dear all,

I'm writing a DPM_SCALAR_UPDATE to use in an Euler-Euler-Lagrange simulation. Several terms in my UDF reference liquid properties, and because of the multiphase domain I assume I have to call the proper phase thread in order for the UDF to work. However, I'm a bit lost on how to do that.

For example, when I use DPM in combination with a single liquid phase, I can use

Code:

C_R(c,tr)

to call the liquid density. How do I get the proper tr in multiphase?

Thanks in advance!

Best regards,
Cees

CeesH · May 13, 2015, 05:28

THREAD_SUB_THREAD(t,0) - got it

pakk · May 15, 2015, 04:02

And to be more complete for other people who might find this using google, since you mention DPM: use P_CELL_THREAD(p) to find the cell thread of the cell that the particle is currently in, so it will be:

THREAD_SUB_THREAD(P_CELL_THREAD(p),0);

HyperNova · June 27, 2015, 05:38

Hi friends,
is it possible to use DPM with Eulerian multiphase together? i am modelling bubble plume, for bubbles i am using DPM, for the reservoir i used to use VOF(water and air above it) but eulerian can solve energy equation for both phases.

May 12, 2015, 11:35	UDF in DPM+Eulerian multiphase	#1
CeesH Senior Member Cees Haringa Join Date: May 2013 Location: Delft Posts: 607 Rep Power: 0	dear all, I'm writing a DPM_SCALAR_UPDATE to use in an Euler-Euler-Lagrange simulation. Several terms in my UDF reference liquid properties, and because of the multiphase domain I assume I have to call the proper phase thread in order for the UDF to work. However, I'm a bit lost on how to do that. For example, when I use DPM in combination with a single liquid phase, I can use Code: C_R(c,tr) to call the liquid density. How do I get the proper tr in multiphase? Thanks in advance! Best regards, Cees

May 15, 2015, 04:02		#3
pakk Senior Member Join Date: Nov 2013 Posts: 1,965 Rep Power: 27	And to be more complete for other people who might find this using google, since you mention DPM: use P_CELL_THREAD(p) to find the cell thread of the cell that the particle is currently in, so it will be: THREAD_SUB_THREAD(P_CELL_THREAD(p),0); CeesH likes this.

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May 13, 2015, 05:28		#2
CeesH Senior Member Cees Haringa Join Date: May 2013 Location: Delft Posts: 607 Rep Power: 0	THREAD_SUB_THREAD(t,0) - got it

June 27, 2015, 05:38		#4
HyperNova Senior Member B_Kia Join Date: May 2014 Location: Ir Posts: 123 Rep Power: 12	Hi friends, is it possible to use DPM with Eulerian multiphase together? i am modelling bubble plume, for bubbles i am using DPM, for the reservoir i used to use VOF(water and air above it) but eulerian can solve energy equation for both phases.