particle-particle/ particle wall collision efficiency

Unknown

Hello everybody.
I am studying the behavior of particles in a fluid in tube. 
Its too important for me to know collision efficiency between particle-particle and particle-wall. Also the rate of deposition is important for me.
Is there any tool on EDEM for measuring these parameters?

Thanks a lot 

Stephen Cole

Hi Fatemeh,

You can use either the Contact information or turn on 'track Collisions'.  If using Contacts you only get the instantaneous particle-particle and particle-wall contact information at the save data point.  If using Track Collisions this will record the time-dependent collision, store this in memory and write it to file at the save data point.

 

Track collisions gives you a lot more data however it uses more memory and is only supported on CPU not GPU.

 

The track collisions option can be turned on in the EDEM Simulator tab.  Once you have this or are looking at Contacts you can export the data from the EDEM Analyst > File > Export Results data area.

Regards

Stephen

 

Stephen Cole

Hi Fatemeh,

You can use either the Contact information or turn on 'track Collisions'.  If using Contacts you only get the instantaneous particle-particle and particle-wall contact information at the save data point.  If using Track Collisions this will record the time-dependent collision, store this in memory and write it to file at the save data point.

 

Track collisions gives you a lot more data however it uses more memory and is only supported on CPU not GPU.

 

The track collisions option can be turned on in the EDEM Simulator tab.  Once you have this or are looking at Contacts you can export the data from the EDEM Analyst > File > Export Results data area.

Regards

Stephen

 

Unknown

Stephen Cole_21117 said:

Hi Fatemeh,

You can use either the Contact information or turn on 'track Collisions'.  If using Contacts you only get the instantaneous particle-particle and particle-wall contact information at the save data point.  If using Track Collisions this will record the time-dependent collision, store this in memory and write it to file at the save data point.

 

Track collisions gives you a lot more data however it uses more memory and is only supported on CPU not GPU.

 

The track collisions option can be turned on in the EDEM Simulator tab.  Once you have this or are looking at Contacts you can export the data from the EDEM Analyst > File > Export Results data area.

Regards

Stephen

 

Dear Stephen.

I activated 'Track collision' in EDEM but there is not any information about collision that results agglomerates. 
There is only some information about number of collisions, etc...
Should I activate 'Bonding V2' to measure collision efficiency?
Collision eff=Num of collision which cause agglomerates./total Num of collision!

Best,
Fatemeh

Stephen Cole

Fatemeh Hosseini_21942 said:

Dear Stephen.

I activated 'Track collision' in EDEM but there is not any information about collision that results agglomerates. 
There is only some information about number of collisions, etc...
Should I activate 'Bonding V2' to measure collision efficiency?
Collision eff=Num of collision which cause agglomerates./total Num of collision!

Best,
Fatemeh

Hi Fatemeh,

The agglomeration component is not something that EDEM outputs the data directly.  The information about the particles positions and contacts is available however there is nothing specifically in EDEM that gives the agglomeration information.

There is a ongoing project to create an EDEMpy analysis script to show this information however this is not available currently.  You could look at EDEMpy analysis yourself for this, we have an e-learning course here:

 

https://learn.altair.com/enrol/index.php?id=228

 

Regards

Stephen

Unknown

Stephen Cole_21117 said:

Hi Fatemeh,

The agglomeration component is not something that EDEM outputs the data directly.  The information about the particles positions and contacts is available however there is nothing specifically in EDEM that gives the agglomeration information.

There is a ongoing project to create an EDEMpy analysis script to show this information however this is not available currently.  You could look at EDEMpy analysis yourself for this, we have an e-learning course here:

 

https://learn.altair.com/enrol/index.php?id=228

 

Regards

Stephen

Many Thanks Stephan.

The agglomeration shape,size, position, and collision efficiency is really important for my project.

In this way, should I define new variable myself?

I mean is there any option in EDEM that I write a code and couple it with EDEM? (such as adding udf in Fluent)
Is there any similar option in EDEM too?


Regards,

Fatemeh

Stephen Cole

Fatemeh Hosseini_21942 said:

Many Thanks Stephan.

The agglomeration shape,size, position, and collision efficiency is really important for my project.

In this way, should I define new variable myself?

I mean is there any option in EDEM that I write a code and couple it with EDEM? (such as adding udf in Fluent)
Is there any similar option in EDEM too?


Regards,

Fatemeh

Hi Fatemeh,

 

The EDEMpy customisation is probably the best approach here which allows you to define the variables.  The e-learning link above give a good overview, we also have more general webinar on EDEM API - https://www.altair.com/resource/edem-application-programing-interface-api-and-introduction-to-edempy

 

Regards

Stephen