|
[Sponsors] |
September 30, 2003, 11:00 |
about dynamic mesh macro
|
#1 |
Guest
Posts: n/a
|
Hi I'm a user of Fluent.There're three questions while running Fluent. I would be so glad if i could get some advises from you.
Q1 I would like to simulate one flow field of moving boundary , so the tool of dynamics mesh is needed. There're three kinds of MACROs about dynamics mesh in Fluent, including define_cg_motion,define_geom,and define_grid_motion. In my recent work,the function of "define_geom(name,d,dt,position)" is used. But I'm not sure about the exact meanings of the forth argument(position) of this function. By the way, the type of "position" is REAL, and i feel confused by the example in the manual. --->position[1]=-position[0]*position[0]+position[0]+1 Q2 The way of boundary moving is a fuction of time. But how to add the argument of "time step size" into the function of "define_geom"? for example , y=x*2*time. Q3 Could you make an example of using "define_geom" for me? I really appreciate the answer from you. thank you very much |
|
October 23, 2003, 18:32 |
Re: about dynamic mesh macro
|
#2 |
Guest
Posts: n/a
|
I've been working a lot with fluent's dynamic mesh UDF's and I'd like to compare notes. Send me an email about what your problem is.
I have done a few different projects and I have tried all 3 of the dynamic mesh UDF's. The most powerful UDF is define_grid_motion, it requires a little more programming, but everything can be done using that UDF. I have been unable to get define_geom to work, and the example you mention in the Fluent guide is worthless. -Pat |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
pls help. mesh collapsed with dynamic mesh. | wlt_1985 | FLUENT | 2 | May 7, 2020 11:42 |
Dynamic mesh is not getting updated. | cardio | FLUENT | 1 | May 20, 2014 09:41 |
3D Hybrid Mesh Errors | DarrenC | ANSYS Meshing & Geometry | 11 | August 5, 2013 07:42 |
Dynamic mesh + grid adapt = Crash! (Files included | BillH | FLUENT | 4 | July 24, 2007 16:31 |
dynamic mesh and sliding mesh | nasser | FLUENT | 0 | November 1, 2005 03:37 |