Learning Forum

[kawabata]

I would like to confirm the behavior about "step size" slider of particles. As the Help mentioned, I believe the particles move slowly by sliding to left side. But, unfortunately I cannot confirm the behavior in Live 2019R2. Do I misunderstand something?
Then, "The number of steps is fixed" means number of particles is fixed. Is this right? If it is right, can I change number of particles?

 Thanks,
   Ichiro

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[Gaurav Sharma]

Hi Ichiro

You understanding is correct, the slider towards left means slower animation and towards right is faster animation. I can get that behavior on my machine without any issue (refer attachment).

The number of steps doesnt mean number of particles.Number of particles can be filtered using min and max gate sliders. Min gates ensure that particles lower then a certain velocity wont be displayed. Max gate on the other hands ensures that particles above a particular velocity wont be displayed. The slider dictates what these min and max velocities are. Together min and max gate gives good control on the particles that you wish to visualize.

Whereas "Size" clearly indicates size/diameter of particles.

Thanks & Regards,

Gaurav

🛈 This post originally contained file attachments which have been removed in compliance with the updated Ansys Learning Forum Terms & Conditions

[kawabata]

Hello Gaurav_ANSYS ,

Thank you for creating the video file. 
On my environment, it seems "Step Size" does not work correctly(refer attached video file). While (dragging)sliding bar only, particles move slowly. 
Do you have any solutions?

  Thanks in advance,
    Ichiro

🛈 This post originally contained file attachments which have been removed in compliance with the updated Ansys Learning Forum Terms & Conditions

[Gaurav Sharma]

Ichiro 

This looks strange. It seems that slider stops working as soon as you release the click of mouse.

Can you try updating the graphics card drivers from here and see if it helps.

Regards,

Gaurav

[kawabata]

Hi Gaurav_ANSYS 

I updated the graphics driver. But, this was not fixed. 

 Regards,

   Ichiro

[kawabata]

Hello again Gaurav_ANSYS 

And as additional information, 19.2's works but 2019R1's does not work like 2019R2.

 Thanks,

   Ichiro 

[Gaurav Sharma]

Ichiro 

Do you mean the problem occurs with the last releases only, that is 2019 R1 and R2 and the issue wasnt observed with 19.2.

Also, can you please check the standard "water flow in pipe" example in Live and see if the problem appears with this model as well. This will help us identify if the problem is model specific or not.

Thanks & Regards,

Gaurav

[kawabata]

Hello Gaurav_ANSYS  ,

I confirmed this behavior by using "water flow in pipe" on Live 19.2, 2019 R1 and 2019 R2.
This problem occurred on 2019 R1 and 2019 R2.  19.2 is no problem, Step Size works.

  Regards,
    Ichiro

[Gaurav Sharma]

Ichiro 

I haven't seen such a behavior before. The issue is not reproducible at my end, and at times such machine specific issues are rectified by a reinstallation. You may like to give it a try as well.

In the meantime, I am checking with the team to see if this is something others have observed as well.

Best Regards,

Gaurav

[kawabata]

Hi Gaurav_ANSYS ,

This occurred not only one machine (Windows7 sp1 w/ M2000). On Quadro M2000 under Windows10 (1903) or P5000 under Windows7. In other words, I have no machines w/o this issue. 

Regards,

  Ichiro

[Gaurav Sharma]

Ichiro 

It is best to visualize the particles at a particular instant and pausing the simulation would be helpful.

I could reproduce your observations when the simulation was kept ON, but once I paused the analysis, desired effects of step size were observed. 

Please give it a check and do let me know if this helps.

Best Regards,

Gaurav

[kawabata]

Hi Gaurav_ANSYS ,

Thank you for your great help.

You are right. By pausing analysis, Step Size works as I expected.

 Thanks a lot,

   Ichiro