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-   -   multiphase UDF, variables for phase velocities (http://www.cfd-online.com/Forums/fluent/40259-multiphase-udf-variables-phase-velocities.html)

 Kerem March 22, 2006 06:28

multiphase UDF, variables for phase velocities

hi all,

i want to use the phase velocities at boundary surfaces in my udf. for the single phase flow, the variables are F_U(f,t), F_V(f,t), F_W(f,t) but i couldnīt find any information about the variables corresonding to the different phase velocities in multiphase flow. i am using Eulerian Model.

thanks for any help concerning.

kerem

 onlooker March 23, 2006 22:03

Re: multiphase UDF, variables for phase velocities

RTFM

 onlooker March 23, 2006 22:13

Re: multiphase UDF, variables for phase velocities

ok, I take that back.

 Kerem March 27, 2006 05:00

Re: multiphase UDF, variables for phase velocities

i actually found the answer in an example; the phase velocities of such form are used for an Eulerian two phase (gas-solid) model:

vel_gas_x = C_U(cell, thread_g)

vel_gas_y = C_V(cell, thread_g)

vel_sld_x = C_U(cell, thread_s)

vel_sld_y = C_V(cell, thread_s)

and likewise -i guess- for the face velocities. i hope this helps you too..

kerem

 Kerem March 27, 2006 08:20

Re: multiphase UDF, variables for phase velocities

oops,

forgot to mention the definition of the sub thread:

thread_s = THREAD_SUB_THREAD(thread, phase_identifier_solid)

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