Reply To: Volume Fraction too Low. How to Improve?

[abdullahhassan]

Thank you Sir,

I understand your point for using HTC value. I will try this way and will let you know. 

1- shadow wall will be set to coupled as shown below:

2- If I choose coupled at the "outside" tube wall (wet tube side boundary), how can I choose HTC ? below is the BC setup. 

3- last thing, what is meant by re-read the inlet pressure?