Reference Document Request

Ovunc2

Hello,

I am working on sloshing motion of water in a tank. I got some feedback on number of particle in Altair Community. But unfortunately, I do not have a document that I can refer to as a reference in my studies.

Do you have a technical document or academic paper on how solutions change with the increasing number of particles that I can use as a reference?

Thank you.

Regards

Rahul_P1

Perhaps this helps - https://altairuniversity.com/wp-content/uploads/2012/08/Example_6.pdf 

you should find the Radioss example model files in the installation and the example document in Help

Andy_20955

Hi,

I assume you are using SPH particles?  I don't think there are any studies about the number of particles available in the help.  It depends on the problem, the speed of the computer you have available to run the simulation, and how long you want to wait for results.  More particles means longer solution times.

I would start with less particles and make sure the simulation is running and that your boundary conditions are correct.  Then you can add increase the number of particles to study how the results change. 

Thanks,

Andy

Ovunc2

Rahul Ponginan_22560 said:

Perhaps this helps - https://altairuniversity.com/wp-content/uploads/2012/08/Example_6.pdf 

you should find the Radioss example model files in the installation and the example document in Help

Hi Rahul, 

Thanks for sharing @Rahul Ponginan .

I've seen this study before. But, unfortunately this is not about the change in the number of particles.

Thanks. 

Regards, 

 

Ovunc2

Andy_20955 said:

Hi,

I assume you are using SPH particles?  I don't think there are any studies about the number of particles available in the help.  It depends on the problem, the speed of the computer you have available to run the simulation, and how long you want to wait for results.  More particles means longer solution times.

I would start with less particles and make sure the simulation is running and that your boundary conditions are correct.  Then you can add increase the number of particles to study how the results change. 

Thanks,

Andy

Hi @Andy 

Thank you for information. 

I have asked before in topic: 

https://community.altair.com/community?id=community_question&sys_id=0176443a1b2bd0908017dc61ec4bcb66

• Can we say that as the number of particles increases, the results get closer to a certain value?

And after a certain number of particles, increasing the  particle number wont effect the simulation results? (which is the case for mesh convergence in FEM analyses)

 

Thank you. 

Best Regards, 

 

Andy_20955

Ovunc2 said:

Hi @Andy 

Thank you for information. 

I have asked before in topic: 

https://community.altair.com/community?id=community_question&sys_id=0176443a1b2bd0908017dc61ec4bcb66

• Can we say that as the number of particles increases, the results get closer to a certain value?

And after a certain number of particles, increasing the  particle number wont effect the simulation results? (which is the case for mesh convergence in FEM analyses)

 

Thank you. 

Best Regards, 

 

Hi @Ovunc2 

Yes I agree with your statement.

Thanks,

Andy

Ovunc2

Andy_20955 said:

Hi @Ovunc2 

Yes I agree with your statement.

Thanks,

Andy

Hi , 

Thank you @Andy.

Best Regards,