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-   -   Boundary conditions (https://www.cfd-online.com/Forums/fluent/85182-boundary-conditions.html)

vishal_kumar February 18, 2011 22:59

Boundary conditions
 
Hi,
I am doing analysis for a steam turbine...so i have three inputs for this case...mass flow at inlet,inlet pressure and inlet temperature....can any one suggest me that which boundary condition i have to choose...

It is compressible fluid..

If i choose my inlet boundary as mass_flow_inlet and here i can give my inlet mass flow and temperature but inlet pressure cannot be given..

If i choose Pressure_inlet as my inlet boundary condition then here i can give inlet pressure and inlet temp only but amount of mass flow cannot be given

Outlet pressure and temp are not known and i have choosen pressure_outlet as my boundary condition,but oulet pressure and temp are unknown

Can anyone suggest me that which boundary condition can be choosen such that i can give my three inlet parameters, ie inlet pressure,inlet temp and mass flow at inlet....and which boundary condition for outlet as well

Thanks & Regards
Sudhir

rkumar310 February 19, 2011 00:36

You have two options here..
1. Use a pressure outlet with target mass flow rate option (not sure if its available with compressible flow though)

2. Use a mass flow inlet as an outlet (you can do that by specifying the direction vector as pointing out of the domain)

Hope that helps,

jhthoh February 19, 2011 01:32

Fluent car simulation help
 
Hi guys, i m new user for fluent n i totally nt familiar v it.bt i need it urgently for my project. So do u guys knw how to set up for a simulation for race car or normal car? or any link related? thanks alot for help..

rkumar310 February 19, 2011 01:37

You need to be more specific on what exactly you need help with! And dont hijack other threads !

jhthoh February 19, 2011 01:41

i had post a new thread bt no ppl respon me ther, i m so sorry for posting here.i will post a new thread,so if can pls teach me..thanks alot...n vr vr sorry..


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