LIGGGHTS® - Developer Forum

hello,

I was trying to find an approximate value of delta_n, i.e. overlap distance between the particles, so I thought about looking at the dump files I am getting and see how the value given for the diameter of each particle had changed with respect to the initial assigned diamter (i.e. radius in the input script).
But I have seen that most of the values over are more than the initial one, some are less, and some are of negative sign.

hello,

I am trying to perform a simulation for a flowing cohesive powder with high moisture content (10%), so I thought about using the washino/capillary/viscous model, but the particles are repelling with high speed (blowing) once they get in contact from the very 1st time-step, and they keep acting in the same manner .
The % of Hertz time is exceeding 10 unlikely although the particles are flowing freely due to gravity, and % of Reyleigh time is below 20.

So may you please provide me by some suggestions that would solve the issue.

best wishes,

hello,

Is there a way in which I can apply a periodic rotation for my mesh in LIGGGHTS ?
Like rotating a drum by 90°->keeping it in rest for a certain time->rotating it further by 90°, and so on.

best wishes

OpenMP available by LIGGGHTS-Public?

Hi!
I'm working with adding both tangential and rolling models to LIGGGHTS so they work with JKR adhesion.

I have some problems however now to validate if the models are working correctly so I was wondering if anyone has a recommendation on how to do the validation on this type of models?

hello,

Is there a way to use two cohesion models in the same simulation?
for example: sjkr with washino/capillary/viscous.

best wishes,Nizar

hello,

I have an inquiry regarding the cohesion model easo/capillary/viscous which I hope someone may help me getting an answer for it.

Hi,

I am new to LIGGGHTS . I tried to create lmp_auto executable, when I run the command make auto the terminal gives me the error "Could not compile VTK example with ...... " Kindly someone help me solve the problem. I downloaded VTK via homebrew on my macOS and gave the path for include and lib files in Makefile.user correctly

My Makefile.user VTK details,

VTK_INC_USR=-I/usr/local//include/vtk-8.1
# Path that contains the VTK libraries
VTK_LIB_USR=-L/usr/local/lib

What should I do. Please help me.

hi,

I compiled a new version of LIGGGHTS having USE_VTK = "ON" and AUTOINSTALL_VTK = "ON" in the Makefile.user by typing:
sudo make clean-all
sudo make auto
in the src directory.
LIGGGHTS was compiled, but the surprising thing is that the vtk folder in the lib folder is still empty,and upon using dump custom/vtk command in the input script, I am getting the following error:
ERROR: Invalid dump style (../output.cpp:634)

I am trying to solve VTK problems since the last week, so I hope you can help me in overcoming this issue.

best wishes,

hey guys,

may you please inform me how can I change in the make files in such a way I can compile LIGGGHTS with vtk support but without the AutoInstall command to be activated, i.e. as if letting it recognize the previously downloaded vtk package by me and taking it into consideration.

best wishes,
Nizar