|
[Sponsors] |
June 27, 2013, 06:00 |
Boundary Conditions problem
|
#1 |
Member
Osman
Join Date: Oct 2012
Location: Japan
Posts: 53
Rep Power: 13 |
I have developed a code to solve 2D Navier stokes equation in a channel.
I have used Immersed boundary method to simulate the vibration of a cantilever beam in the channel. The problem is that i do not know the direction of flow. So i can not specifiy which boundary to be inlet and which boundary to be outlet. Thus, i have to set both of the boundary to be Open Boundary. My question is: Waht should be the pressure and velocity boundary conditions on both boundaries ??? Please Help me. |
|
July 8, 2013, 02:04 |
|
#2 |
New Member
Join Date: Jun 2013
Posts: 1
Rep Power: 0 |
I assume that any flow created is going to be due to the vibration of the beam -- hence the open channel.
In that case, jj = 1:ny u(1,jj) = u(2,jj) u(nx,jj) = u(nx-1,jj) You get the idea. |
|
July 8, 2013, 02:10 |
|
#3 |
Member
Osman
Join Date: Oct 2012
Location: Japan
Posts: 53
Rep Power: 13 |
i applied neumann boundary conditions for velocity
Dirichlet boundary conditions for pressure P_inlet=0 p_outlet=0 The code works very well. However, when i change the P_outlet to have a value for example 2 Pascal the code fails and blow up. Do you have any suggestions ?? |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Implementation of boundary conditions for FVM | Tom | Main CFD Forum | 7 | August 26, 2014 05:58 |
An error has occurred in cfx5solve: | volo87 | CFX | 5 | June 14, 2013 17:44 |
Problem with Boundary conditions | Mahiboobswamulu | Main CFD Forum | 10 | August 26, 2003 13:24 |
boundary conditions problem | reinaldo kuhn | Phoenics | 1 | March 27, 2003 11:46 |
Boundary conditions? | Tom | Main CFD Forum | 0 | November 5, 2002 01:54 |