|
[Sponsors] |
Flapping wing along inclined hovering (Flaping wing) Dynamic mesh |
|
LinkBack | Thread Tools | Search this Thread | Display Modes |
May 12, 2016, 06:32 |
Flapping wing along inclined hovering (Flaping wing) Dynamic mesh
|
#1 |
Senior Member
Arun raj.S
Join Date: Jul 2011
Posts: 194
Rep Power: 14 |
Hi everyone,
I am simualting dragonfly motion. I want to use structured mesh around the aerfoil. But i did so many tries but I am not able to succeed using CG-MOTION. It is mainly due to the interface. Shadow of the interface (interface2) stays in the same place but the other interface move with the inner body. Both interface and shadow are not moving together. Please let me know what is the problem. I can give all the details u want. I am using smoothing, remeshing for the outer domain. My udf is working but I dont knw what to do at the interface. Smoothing = 0, remeshing accourding to mesh size. I followed the instructions in the tutorial. I dont know how he did, but this video shows that in fluent we can use dynamic mesh and interface https://www.youtube.com/watch?v=01hOD68DxrM x(t) = (Ao/2)*(1+cos(2*pi*f*t)*(cos(beta)) y)(t) = (Ao/2)*(1+cos(2*pi*f*t)*(sin(beta)) alpha(t) = alphao+B sin(2*pi*f*t) Ao=2.5 cm B=pi/4 alphao=pi/4 f=40 Hz beta = 60 degree I have differentiated the above function and applied in the udf vel[0] = - A0/2 * 2*pi*f*cos(beta)*sin(2*pi*f*t) vel[1] = - A0/2 * 2*pi*f*sin(beta)*sin(2*pi*f*t) omega[2]= B *2*pi*f*cos(2*pi*f) |
|
May 14, 2016, 02:59 |
Steps followed for flapping wing and interface error
|
#2 |
Senior Member
Arun raj.S
Join Date: Jul 2011
Posts: 194
Rep Power: 14 |
Hi everyone,
I have tried so many times but not able to succeed. So I have prepared a pdf (as followed in the below link) containing all the steps I followed for my simulation. I have attached my UDF also. Kindly someone let me know the reason why this is happening Thank you once again. https://drive.google.com/file/d/0B7L...ew?usp=sharing https://drive.google.com/file/d/0B7L...ew?usp=sharing |
|
May 19, 2021, 18:32 |
|
#3 | |
New Member
sittisak
Join Date: Feb 2021
Posts: 3
Rep Power: 5 |
Quote:
Sittisak. Thank you very much. |
||
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Gambit problems | Althea | FLUENT | 22 | January 4, 2017 03:19 |
[mesh manipulation] Importing Multiple Meshes | thomasnwalshiii | OpenFOAM Meshing & Mesh Conversion | 18 | December 19, 2015 18:57 |
Fatal Error signal in flapping wing analysis | gopalkrishnan | FLUENT | 0 | December 22, 2014 09:18 |
mesh missing after export in gambit | morteza08 | Main CFD Forum | 0 | July 23, 2010 02:19 |
Icemcfd 11: Loss of mesh from surface mesh option? | Joe | CFX | 2 | March 26, 2007 18:10 |