LIGGGHTS® - Developer Forum

Hi All,

I try to install Open MPI, which is prerequiste for liggghts. Some info about my current Suse version :

NAME="SLED"
VERSION="12-SP3"
VERSION_ID="12.3"
PRETTY_NAME="SUSE Linux Enterprise Desktop 12 SP3"
ID="sled"

I installed Open MPI 1.6 by typing

./configure --prefix=$HOME/openmpi
make all
make install

I am trying to install LIGGGHTS in a cluster based on Red Hat Enterprise Linux Server 7
I have read all the post in the forum but I have been able to install it.

I have unsuccessfully tried different approaches:

1st TRY:

I used git clone https://github.com/CFDEMproject/LIGGGHTS-PUBLIC.git to download LIGGGHTS,

then I download VTK using git clone https://gitlab.kitware.com/vtk/vtk.git VTK (Version vtk-8.2)

I built it using:

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.