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[abdullahhassan]

Hello,

I am solving shell and tube multiphase conjucate heat transfer problem.

there are three phases

primary phase = water liquid

secondary phase = water vapor

secondary phase = NH3 liquid

 

Water vapor is bound to tube via Volume fraction = 1 in multiphase boundary condition

NH3 is bound to shell side as VF =1 

 

After running calculation with hybrid initialization, i found that the water vapor condense to water liquid in Tube domain (Which is OK)

but also water liquid is showing a reversible flow in shell domain from outlet (which is practically unacceptable). 

 

I dont understand how to bound the primary phase (water liquid) to tube domain specifically. as user manual say, we can't assign primary phase to any domain. 

If there is any UDF, what kind of UDF i need to built?

 

please guide me in this 

[abdullahhassan]

Hello, can you guide me on this matter?