[Dave_88]

Hello everyone,

I need to clarify a general boundary condition issue.

I have got a pressure inlet for a compressible flow with air. I have received the values for the boundary conditions from experimental data, which allows me to specify static pressure, total pressure and turbulence parameters. In my theoretical calculation my inlet should have:
u=60m/s
p_st=97,878Pa
T=289K
=>rho=1.1785kg/m³ (resulting from isentropic change of state with pi=0.97878)
p_tot= 100,000Pa

Using a pressure inlet allows me to specify the total pressure and an initial guess for static pressure. After a converged calculation, the solution values for the inlet show different values. The mean velocity is about 88m/s and the static pressure 95,400Pa, which is completely wrong.

Does anybody know, how a) to correctly input the boundary values, that the results show the values I want to see and b) why there are those differences? (velocity inlet does not work here)

Help is much appreciated.

Regards