|
[Sponsors] |
June 20, 2003, 04:19 |
Pressure defination in subsonic flowfield
|
#1 |
Guest
Posts: n/a
|
I calculate a subsonic flowfield with two inlets and one outlet. I use the Inlet BC at two inlets and Pressure BC at the outlet. The resulted flow field has a corrected pressure value at the outlet but not at the inlet. But in the subsonic flowfield, the pressure at the outlet should not have influence to the whole flowfield.
If I use the Outlet BC at the outlet, and Inlet BC at two inlets, the calculation divergence. What is the reason for that? Thanks! |
|
June 20, 2003, 12:38 |
Re: Pressure defination in subsonic flowfield
|
#2 |
Guest
Posts: n/a
|
Is your simulation transient or steady-state?
|
|
June 21, 2003, 06:18 |
Re: Pressure defination in subsonic flowfield
|
#3 |
Guest
Posts: n/a
|
For subsonic flows (M<1) flow disturbance may extend upstream, so it may influence to the whole flowfield. For supersonic flows (M>1) flow disturbance may extend upstream only in boundary layer (where M<1).
Maybe you have strong reverse flows at the outlet, that isn`t correct... |
|
June 23, 2003, 02:57 |
Re: Pressure defination in subsonic flowfield
|
#4 |
Guest
Posts: n/a
|
I have a steady-state simulation.
Thanks! |
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Torque defination | Nishant | FloEFD, FloWorks & FloTHERM | 6 | March 4, 2009 05:04 |
UDF-Yplus defination | Michael | FLUENT | 1 | December 4, 2008 21:46 |
Defination of NV_D(psi, =, a,b) in UDF | summer | FLUENT | 1 | September 4, 2006 04:36 |
Froozen flowfield | Allan | Siemens | 3 | November 16, 2001 13:30 |
pressure in turbulence flowfield | Yu-Li Chang | Main CFD Forum | 0 | April 28, 2000 10:14 |