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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Volume Fraction too Low. How to Improve? › Reply To: Volume Fraction too Low. How to Improve?

August 7, 2024 at 9:55 am
abdullahhassan
Subscriber

Thankyou Sir,

Can you guide me on about checking energy balance as well. As you can see in below image,

if I choose all boundaries then net heat transfer rate = -354W but if I skip either of Vapordomain_tubewall OR Tubewall:1 then the net heat transfer rate = 3W. 

The confusion is, I have inputted constant temperature at tubewall:1 BC to accomodate water side heat flux and choose vapordomain_tubewall(interface) as Coupled. 

If we see the net heat transfer rate then both have nearly same -351W of heat transfer rate.

Should I skip one boundary say tubewall:1?  as we can consider both as same thing? I mean, the whole energy absorbed by interface will go to tubewall:1?

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