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Search took 0.00 seconds. Search: Posts Made By: Pat84
Forum: CFX August 1, 2013, 07:12
Replies: 27
Views: 5,766
Posted By Pat84
The error is caused by an error of the mesh...

The error is caused by an error of the mesh interpolator. I did send a request to Ansys and this error will hopefully be fixed with CFX 15.

The parameter "smooth inside ims = t" is set even if...
Forum: CFX April 27, 2012, 10:58
Replies: 27
Views: 5,766
Posted By Pat84
The translational motion is just the beginning,...

The translational motion is just the beginning, the rotation will follow.
Later I'll move a bigger "particle" through a channel via air flow (with 6dof).

Now I try to simulate the ball in the...
Forum: CFX April 25, 2012, 16:37
Replies: 27
Views: 5,766
Posted By Pat84
Is it possible to enable the rigid body mode for...

Is it possible to enable the rigid body mode for a boundary and disable the rigid body solver? I would like to solve the equation of motion with my own code, but that would be easier with the rigid...
Forum: CFX April 21, 2012, 07:20
Replies: 27
Views: 5,766
Posted By Pat84
Hi ghorrocks, I halve the element edge length...

Hi ghorrocks,
I halve the element edge length too.

Now I have the plan to input the acceleration and velocity manual via junction box. I only have to know the directory where the rigid body stats...
Forum: CFX April 19, 2012, 10:06
Replies: 27
Views: 5,766
Posted By Pat84
Of course you are right, but now I just want to...

Of course you are right, but now I just want to get basic rigid body physics redefined on the new mesh. The simulation time, for example, restarts after each remeshing from 0, if you set the initial...
Forum: CFX April 19, 2012, 08:31
Replies: 27
Views: 5,766
Posted By Pat84
I did the simulation again with a refined grid....

I did the simulation again with a refined grid. The refined mesh has nearly 500000 cells in a diffusor with a length of 0.15 m and a 0.04 - 0.06m diameter. The inlet velocity is about 10 m/s. I think...
Forum: CFX April 18, 2012, 12:57
Replies: 27
Views: 5,766
Posted By Pat84
Hi Singer, here are the results of the...

Hi Singer,

here are the results of the simulation without remeshing. As I expected the acceleration increases strongly, because the velocity at the inlet is more than twice times higher than the...
Forum: CFX April 18, 2012, 11:06
Replies: 27
Views: 5,766
Posted By Pat84
Thank you for your answer, I only let the ball...

Thank you for your answer, I only let the ball move up and down to reach a equilibrium point between the gravitation and the fluid impulse. Yes I could model the mesh motion on a smarter way, but...
Forum: CFX April 18, 2012, 10:04
Replies: 27
Views: 5,766
Posted By Pat84
The BCs are all constand. Only the ball should...

The BCs are all constand. Only the ball should move in space.
Forum: CFX April 18, 2012, 09:57
Replies: 27
Views: 5,766
Posted By Pat84
I move the ball by the 6 DOF-Solver, but I only...

I move the ball by the 6 DOF-Solver, but I only solve translational motions (CFX standard newmark Newmark-Method).
Forum: CFX April 18, 2012, 08:46
Replies: 27
Views: 5,766
Posted By Pat84
Rigid body + remeshing error in redefining the rigid body updated-initial conditions

Hello,

I'm trying to simulate a ball inside a diffuser being lifted by the air blowing upwards from the bottom opening of the diffusor. Gravitation is taken into account in downward direction. The...
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