Reply To: Reversed flows after switching inlet boundary conditions

[thaison.tran]

 

 

Thanks Rob for your prompt response.

Here I am referring the tank pressure as inlet pressure (gauge total pressure), which is set using the following scheme script.

 

(define (change-inlet-boundary-to-pressure)

    (if (> (%rpgetvar 'flow-time) 60) 

        (begin

            ;; Set the boundary from mass-flow-inlet to pressure-inlet

            (ti-menu-load-string "define/boundary-conditions/zone-type inlet pressure-inlet")

            

            ;; Set the pressure inlet conditions: pressure = 45000 Pa (0.45 bar), temperature = 77 K

            (ti-menu-load-string "define/boundary-conditions/pressure-inlet inlet yes no 45000 no 0 no 77 no yes")

            

            ;; Output a message confirming the boundary change

            (display "Boundary condition switched to pressure inlet with pressure 45000 Pa and temperature 77 K.\n")

        )

    )

)

 

I created a report file to monitor gauge total pressure at the inlet so that I can adjust the set pressure in the scheme script accordingly. As for hydrogen properties, I extracted it from the REFPROP library available in Ansys into a RGP table and hook it up to the material section of hydrogen in Fluent.