LIGGGHTS® - Developer Forum

Hello,

Is there a way to access the coordinates of all particles in the simulation at a particular timestep in the code? Also, is this done by the neighbor list or the atomVec class? Are they all stored in some array that I can access easily within the source-code?

I tried looking into how dump_custom_vtk works to display the particle coordinates to the .vtk file but I did not find anything.

If this coordinate storage is done by the neighbor list, is there some calculation needed to get global coordinates instead of local coordinates?

Thanks!

Hello.
I would like to use the young's modulus that is imported by the user when describing a particle.
What would be the easiest way to access this value?
From looking at fix_check_timestep, I know I want to use
Y = static_cast(modify->find_fix_property("youngsModulus","property/global","peratomtype",max_type,0,style));
but I do not know what style is in this sense.

Hi,

I am trying to invoke the Voronoi Cell volume from the "compute_voronoi"(voro++ works well) to use as a parameter in the calculation of "easo_capillary.h".

I just found a similar example when doing the "compute_pressure" which also needs to invoke the value of "compute_temperature" for calculation.

My question is that I can only invoke it this way(compute_pressure and compute_temperature)? or does anyone have other suggestions on the invoking?

Very appreciate!

Best Regards,

Jeffrey

I have published several paper on radiative heat transfer in packed bed. Thus, I plan to open the code in the numerical simulation.
The numerical code includes radiation with short-range cutoff and the conduction ...
If anyone interested this topic, please discuss on https://github.com/wuhao1938/RDEM

Later, the related code will be in https://github.com/wuhao1938/RDEM

Can anyone please tell me the name of the contact search algorithm used in LIGGGHTS-Public?? and how contact search algo is implemented in LIGGGHTS??

Hi,
I need to extend the source code on LIGGGHTS so I decided to start with looking at adding a few fprintf statements for debugging but any fprintf statements I add to the source code doesn't seem to be showing up on the terminal screen or on the logfile.
This is how I am remaking LIGGGHTS after any modifications:
make clean-auto
make stubs
make auto

Is there something I am doing wrong or not doing?
Any help is appreciated!
Thanks

I am new on LIGGGHTS and want to configure the development environment on ubuntu. I want to know the development and debugging tool that already people used.

I need the Architecture diagram of some technical documentation.

Is the multicontact model supposed to work with MPI?
I have not had any luck getting the example program in.hydrogel_multicontact to run on Windows.

Due to this error:
Fatal error in MPI_Wait: Message truncated, error stack:
MPI_Wait(request=0x000000EDE92FF220, status0x000000EDE92FF228) failed
Message from rank 1 and tag 0 truncated; 209176 bytes received but buffer size is 117120

Hello Everyone,

I wanted to change the equation of cohesion model in liggghts, so I changed the equation of Force = Cohesive Energy Density * Area in cohesion_model_sjkr.h (lines 98 & 99). Do I need to change any other file associated with it before compiling ? What file in addition to cohesion_model_sjkr.h I need to change in order to implement this new equation of cohesion?

I am new to liggghts and C++, so please let me know what should I do.

Thanks&Regards,
Abdul.