|
[Sponsors] |
User defined and transient boundary conditions - profiles |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
December 9, 2015, 12:23 |
User defined and transient boundary conditions - profiles
|
#1 |
Member
Milan
Join Date: Dec 2013
Posts: 38
Rep Power: 12 |
Hello, hopefully someone can point me towards tutorials/links or give examples here, on the following 2 subjects:
1) I am interested to learn how I can set up a boundary condition of a variable (say velocity components, or other), say inlet profile of velocity or other quantity, as a function of 2 coordinates (say x,y, along a inlet cross-section of a geometry or similar). So, Ui=f(x,y), along a patch, or as Ui=f(x,y,z) in the domain. 2) In addition I wish to learn how can these boundary conditions be manipulated in transient manner. Say, the inlet velocity as a function of time t, either as a explicitly defined function within the solver, or by instructing the solver to read from specific OF user defined functions?...or by reading from .txt ASCII data with profiles at particular instants of time, which one can prepare in the case directory. So Ui=f(t) along a patch, or Ui=f(x,y, t) Thanks!!!! |
|
December 11, 2015, 05:38 |
|
#2 |
Senior Member
Fabian Roesler
Join Date: Mar 2009
Location: Germany
Posts: 213
Rep Power: 18 |
These boundary conditions might be a good starting point:
uniformFixedValue codedFixedValue groovyBC from swak4Foam <-- My favourite With groovyBC you can kind of program your own time and space demendand boundary condition. However you have to compile swak4Foam to be able to use it. Check this link for more information: https://openfoamwiki.net/index.php/Contrib/groovyBC https://openfoamwiki.net/index.php/Contrib/swak4Foam Cheers Fabian |
|
Tags |
b.c., boundary conditions, profiles, udf, user defined b.c. |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
transient pressure and temperature boundary condition profile inicialization | Aurora23 | FLUENT | 2 | April 21, 2015 17:01 |
Transient User Defined Function in CFX | Niru | CFX | 0 | November 12, 2013 18:07 |
Boundary Conditions in Transient Structural Analysis | ashtonJ | CFX | 0 | April 30, 2012 22:28 |
Change boundary conditions during transient simulation | ZenCef | FLUENT | 0 | February 6, 2011 17:10 |
Transient Boundary Conditions | James Date | CFX | 5 | September 13, 2004 12:34 |