muruep00
Civil/Environmental
- Oct 16, 2023
- 26
I calculate the ducts for air cooled condenser conducts which come out of turbines and end up in condensers, in EfW and CCGT plants.
I have always assumed a static fem model with pressure, temperature... etc, but in reality, the system is dynamical because the steam is constantly flowing through the ducts at a certain speed.
I assume that some friction must take place between the interior duct steel walls and the flowing of steam, which would create stresses on duct wall in the direction of flow.
I want to address how strong these stresses are in an approximated way to find if they are negligible, and for that, I need to know the speed of the steam, humidity, temperature, grade of turbulent/laminar flow, and friction coefficient between steel and steam.
I can ask the supplier for all this data except for the friction coefficient, and I am struggling to find it on the net.
Any ideas of how to get this friction coefficient?
I have always assumed a static fem model with pressure, temperature... etc, but in reality, the system is dynamical because the steam is constantly flowing through the ducts at a certain speed.
I assume that some friction must take place between the interior duct steel walls and the flowing of steam, which would create stresses on duct wall in the direction of flow.
I want to address how strong these stresses are in an approximated way to find if they are negligible, and for that, I need to know the speed of the steam, humidity, temperature, grade of turbulent/laminar flow, and friction coefficient between steel and steam.
I can ask the supplier for all this data except for the friction coefficient, and I am struggling to find it on the net.
Any ideas of how to get this friction coefficient?