|
[Sponsors] |
![]() |
![]() |
#1 |
Guest
Posts: n/a
|
Sir, I am solving channel flow problem, At the exit I used fully developed boundary condtion du/dx=0.
I have seen one paper mentioned at the exit convective boundary condtion i.e du/dt+u(avg)*du/dx=0 please help me how to use this as boundary condtion. Thank you |
|
![]() |
![]() |
![]() |
#2 |
Guest
Posts: n/a
|
The second equation also implies the fully developed conditions at the exit (du/dt = 0 for steady flow, and second term du/dx = 0 as you have specified). So you are all set. No problem there.
|
|
![]() |
![]() |
![]() |
#3 |
Guest
Posts: n/a
|
Thanks. Actually I am solving time dependent problem I understood. One more doubt in vortex shedding problem at the top wall u[i][j]=-u[i][j-1] and at the bottom wall u[i][j]=-u[i][j+1]. Could you please tell me how do we name this type of boundary conditions.
|
|
![]() |
![]() |
![]() |
#4 |
Guest
Posts: n/a
|
I assume it has to deal with periodic boundary conditions.
|
|
![]() |
![]() |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Wind turbine simulation | Saturn | CFX | 60 | July 17, 2024 06:45 |
[Gmsh] Import problem | ARC | OpenFOAM Meshing & Mesh Conversion | 0 | February 27, 2010 11:56 |
RPM in Wind Turbine | Pankaj | CFX | 9 | November 23, 2009 05:05 |
Boundary conditon about interior | zhou | FLUENT | 0 | September 19, 2003 19:00 |
Boundary conditions? | Tom | Main CFD Forum | 0 | November 5, 2002 02:54 |