Body to rotate by action of the air flow - 6Dof Solver + Moving Object in fluent
 

Hi everybody. I need your help.

Here, I have a channel (2D) with a inclined rectangle in the middle and I'd like to simulate the rotation of this object by action of the fluid flow. I've been using a 6DOF udf together with dynamic mesh, but when I run the solver, the rectangular object wont rotate. I decreased the values of Moment of Inertia to even very low numbers, but it didn't rotate again. Would it be possible to help me what to do?

I used the following UDF file (however I Changed the values of mass and moment of inertia):

DEFINE_SDOF_PROPERTIES(body, prop, dt, time, dtime)
{
prop[SDOF_MASS] = 666.66;
prop[SDOF_IXX] = 129.6296;
prop[SDOF_IYY] = 111.1111;
prop[SDOF_IZZ] = 129.6296;

printf ("\n2d_test_box: Updated 6DOF properties");
}

Hi PouyanJ

I think that you should be addition some water's property density of water, sound of water in your UDF.

Can you read more detail in " Falling box in water " Tutorial ansys fluent
Good Luck!

try here

Hi Pouyan
If you want to simulate only rotation of body, you must restrict the motion in other directions.
you should use this macro for restriction of motion:
prop[SDOF_ZERO_TRANS_X] = TRUE;
prop[SDOF_ZERO_TRANS_Y] = TRUE;
prop[SDOF_ZERO_ROT_X] = TRUE;
prop[SDOF_ZERO_ROT_Y] = TRUE;

Dear Pouyan, may I know your dynamic mesh setup. Maybe this problem comes from ill dynamic mesh configuration.

Hi everyone

I have been working on moving projectile i barrel. I need udf for dynamic mesh(Six degree of freedom solver). can anyone help me?

hello
if you want to just simulate "moving" use this and replace your weight:

#include "udf.h"
DEFINE_SDOF_PROPERTIES(proj, prop, dt, time, dtime)
{
prop[SDOF_MASS] = 1;
}
the other progress of solve is in "projectile moving inside a barrel"pdf that you want it i can send it for you

Thank you for the reply

I just have pdf file of this tutorial, could u please send me the case and data files of tutorial?

Thanks a lot
amin.ntea@yahoo.com

Hi， all

Could you please also send me the following falling box files:
6dof-mesh.msh.gz
6dof_2d.c

at sxh@dlut.edu.cn

thanks!

Best Regards

sxh

Thanks for the help.

These files can be downloaded from the ansys customer portal.
Log in, go to "Tutorials & Training Materials", and search for "falling box".

Hi dear Arash
I'm also looking for these files ( case, data & UDF of moving projectile inside barrel)
could you please send these files to me if you find them?

CFDSimulation@yahoo.com

These files can be downloaded from the ansys customer portal.
Log in, go to "Tutorials & Training Materials", and search for "falling box".

guys! I can't find the tutorial file in ansys customer portal!
I need your help! anyone could help me to find these files?
a direct link to ansys customer portal or a keyword to find these or something like this!

The files are:
Tutorial: Projectile Moving Inside a Barrel
projectile.msh.gz
aneos.c
six_dof_property.c

Hi dear pakk!
I'm also looking for mesh and udf file for this tutorial: the box falling the water.
could you please send these files to me if you have?
Thansk a lot.
My email: tuananhtran.kthk56@gmail.com

Hi， all

Could you please also send me the following falling box files:
6dof-mesh.msh.gz
6dof_2d.c

at rqb7231@yahoo.com

thanks!

Best Regards

Hi, I'm just using the free student version of Fluent and so don't have a login to the customer portal. If someone could please email the files for the box falling in water and/or the bullet in the gun barrel I would really really appreciate it! Email: jesse.anderson303@gmail.com

Best regards

Jesse

Looking for the tutorial files of box falling in water
 

Hello,

I am trying to do a simulation to observe the behavior of a macroscopic particle in a stream flow. I think that this tutorial will be very helpful, but I do not have the UDF file.

Could someone share with me these files (6dof-mesh.msh.gz and 6dof 2d.c), please?

My email is: eem370@mail.usask.ca

Thanks

Hi guys
 

Hiiii

A useful reference for your problem

http://goo.gl/663zNX

Body to move by action of the fluid flow - 6Dof Solver + Moving Object in fluent
 

Hi everybody. I need your help.

i have a problem in move body by the action of fluid flow.
for that i want udf. so that i can move body in particular direction with the help of action of fluid flow.
in my problem i want to move piston under cylinder.