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i need to use density and volume fraction of each phase in Eulerian multiphase method

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Old   September 20, 2020, 06:36
Post i need to use density and volume fraction of each phase in Eulerian multiphase method
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mohammad
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i want to simulate boiling with Eulerian CHF or RPI boiling models. now i want to compile a udf for my simulation and i need the volume fraction,density and velocity of each phase. primary phase is wwater and secondary phase is vapor.
i know there are C_vof(c,t) and C_R(c,t) in udf manual but i think these macros give me vof and density in single phase or give me the mixture property. i should use vof and density from each phase.
how can i do it?
thank you
Mohammad
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Old   October 5, 2020, 03:27
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look for THREAD_SUB_THREAD macro in Ansys Fluent Customization manual
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Old   October 5, 2020, 03:36
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Quote:
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look for THREAD_SUB_THREAD macro in Ansys Fluent Customization manual
Hi, thank you AlexanderZ
is this macro help to me for seperate the value of each phase?

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Old   October 5, 2020, 03:46
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yes
take a look at Custom Drag Law example
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Old   October 5, 2020, 03:59
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yes
take a look at Custom Drag Law example
can you give me a link for drag example?
my simulation is two phase and its boiling. how drag examples can help me?

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Old   October 6, 2020, 03:34
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Ansys Fluent Customization manual
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Old   October 13, 2020, 11:46
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Quote:
Originally Posted by movaffagh View Post
i want to simulate boiling with Eulerian CHF or RPI boiling models. now i want to compile a udf for my simulation and i need the volume fraction,density and velocity of each phase. primary phase is wwater and secondary phase is vapor.
i know there are C_vof(c,t) and C_R(c,t) in udf manual but i think these macros give me vof and density in single phase or give me the mixture property. i should use vof and density from each phase.
how can i do it?
thank you
Mohammad
Hello sir, please could you help me with the udf code for your problem if you get any resolution for the problem because I am dealing with gas liquid two phase in axial flow pump ? Thanks
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