Inlet but not outlet
 

Hi!

I'm starting with FLUENT. I have a simple model: an enclosure with an inlet and an outlet. I use compressible Xenon as fluid and I would like to find the pressure at the outlet giving some conditions at the inlet. As if I impose in Gambit that the outlet is 'pressure_outlet' FLUENT obliges me to specify a pressure there and as I work with compressible fluids I cannot use the 'outflow' boundary condition... Should I impose that my outlet is an 'interface'? Or... is there any way in FLUENT to modelize this kind of problems entering only the conditions at the inlet? I don't want to impose any condition at the outlet.

Thanks

Isn't the "pressure drop" the important quantity (especially if your flow is incompressible or almost so)? In that case you can have a velocity inlet and a pressure outlet, and set the pr at the pr outlet to zero (just a reference pr), and after simlulation note the pr at the vel inlet.

Hope that helps