Learning Forum

[_1billy]

hello, i have cylinder which supposed to heat flux with inlet water=25 c and outlet 0 gage pressure

now i want to determine outlet temperature of water

1- what is input here ?

[Rob]

The clue is "backflow", the temperature there is only used to determine the temperature of any fluid entering the domain from that surface.
On a flow boundary I'd use mass weighted and on a solid boundary area weighted. Have a look at the definitions and you tell me why.

[_1billy]

thank you , but now in my case should make value of backflow temp = 0 or leave it as default=300 ??

[Rob]

Zero Kelvin would be bad, if there's no back flow leave it at 300K.

[_1billy]

thank you

[Rob]

You're welcome.