|
[Sponsors] |
November 9, 1999, 03:35 |
Unsteady BC with FLUENT5
|
#1 |
Guest
Posts: n/a
|
I would wish to impose unsteady boundary conditions by using software FLUENT5 and them User Defined Function (UDF) in interpreted mode. I tested the example developed in documentation entitled: " Transient Velocity Inlet Profiles for Flow in A Tube " To impose a condition speed of the form: Vx=V0+Asin(wt) I used the following procedure: #include "udf.h" DEFINE_PROFILE(unsteady_velocity,thread,position) { face_t_f; begin_f_loop(f,thread) { real t=RP_Get_Real("flow_time"); F_PROFILE(f,thread,position)=20.+5.*sin(10.t); } end_f_loop(f,thread) } By looking at the time evolution of the speed at the exit of the tube, I do not find a sinusoidale curve ? Did somebody of other encounter the same problem? Thank you in advance
|
|
November 9, 1999, 06:20 |
Re: Unsteady BC with FLUENT5
|
#2 |
Guest
Posts: n/a
|
Please contact the Fluent-Support for questions like these.
|
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Error with the unsteady flamelet Model | Christoph_84 | FLUENT | 0 | February 25, 2010 12:06 |
conditions for unsteady problems | dvdromnu | OpenFOAM Running, Solving & CFD | 5 | November 9, 2009 03:15 |
Unsteady and Flux UDFs for UDSs | tom | FLUENT | 0 | February 13, 2009 11:27 |
Unsteady simulation on the flow around Naca0012 | Peter Pan Zhang | FLUENT | 2 | June 11, 2006 20:53 |
steady or unsteady? (in dpm) | winnie | FLUENT | 1 | April 28, 2003 12:30 |