Read_data for bonded particle model

Hi!

Im having trouble with read_data for a model with bonded particles (Schramm/Richti83) using adhesive particles (washino/capillary/viscous).

I cant seem to get the format right in the data-file. Is there a way to check what format my particles have (e.g. ID x y z ...) When I use write_data to create a file I get the following format:

Atoms

1 1 9.0780778811098348e-03 8.4565641784780238e-03 1.9864876941739838e-03 1.8000000000000000e-05 1.0000000000008616e+03 0 0 0

Running read_data using this format gives me an error "incorrect atom format in data file".

If I add another column of zeros the code is ok with reading the data but I get a "segmentation fault, address not mapped" when I get to the run-command.

Attaching an in-file and data-file.

Thank you! All help appreciated!

Attachment	Size
in.readdatatest.txt	4.78 KB
data.4.txt	1 KB

Forums:

LIGGGHTS® - User Forum

richti83 | Wed, 04/15/2020 - 21:16

As far as I remember you are

As far as I remember you are missing the XX extra bond per atom to register the internal memory.
Have a look at this header and try if this works for you:
https://github.com/richti83/LIGGGHTS-WITH-BONDS/blob/master/examples/bon...
For my version the atom-columns should be
id type x y z radi dens 0

PerB | Thu, 04/16/2020 - 09:41

Thank you! This was very

Thank you! This was very helpful, much apprechiated.

mschramm | Thu, 04/16/2020 - 22:46

No changes

Hello,
No changes have been made to the file input and should be the same as what is used with richti83's version.
The format I used before I started to use the fix particletemplate multiplespheres is what Richti83 described.

mschramm | Thu, 04/16/2020 - 22:51

radi or diameter

Hello,
I don't have the ability to check right now but I think the file wants the diameter and not the radius. I should be able to confirm this later today.

PerB | Fri, 04/17/2020 - 15:35

Thank you

Yes it is diameter, not the radius.

I have gotten it to work now using the following parameters

ID, type, x, y, z, diameter, density, bonds_per_atom, surfaceLiquidContent, liquidFlux, liquidSource

Thank you

Nathan | Wed, 04/22/2020 - 05:57

Successfull examples of using bonding model and its modification

Hi guys,

You can find some good examples of how to use LIGGGHTS to model bonding particles in following papers. Some validations are available too, but there is also a difference between this model in LIGGGHTS and PFC, but these papers do not point out well.

https://www.nrcresearchpress.com/doi/10.1139/cgj-2015-0213#.Xp-_1PYRXCI

https://www.nrcresearchpress.com/doi/full/10.1139/cgj-2016-0182#.Xp_ATPY...

Cheers,