Hello, When I am trying to run my simulation of pouring ‘V’ shape particle in the simulation box, I am facing a problem like this: “Rigid body extent > ghost cutoff - use comm_modify cutoff”. Changing the cutoff distance seems not solving the issue. I am looking for any suggestions regarding the issue. Thank you. Regards, Yeasir Mohammad Akib UTRGV 1 post - 1 pa…

Hi, My simulation box contains two water box connecting with a carbon nano tube (CNT). So, I need to calculate viscosity in CNT. Hereby, instruction provided in Lammps documentation (section 8.3.6) cannot be helpful. Is there any suggestion to calculate viscosity in a defined region? Thanks in advance 1 post - 1 participant Read full topic

Dear all, I inform of an open postdoc position in my group for 1 year, possibly 1 year more, Starting next May. The topics is about molecular interaction of satellite debris erosion and the atmospheric re-entry. MD and DFT-MD simulations are planned for describing air interaction with various Aluminum alloys at temperature/velocities corresponding to atmospheric re-entry. Colla…

Hi all, I am trying to simulate a bunch of patchy particles in Lammps. I have defined the patchy particle with two attractive patches (using small particles bonded to the central larger particle) placed on the opposite poles. Now, I use a fix rigid/small/langevin for the thermostat and use a fix defrom to do shear simulations. I find that using the rigid style blows up the simul…

Dear lammps user, My lammps version is 29 OCt 2020 . I am interested in simulating ellipsoid particles. However, for some reasons at the moment I am interested in setting all relative energy-well depths to be 1 , i.e., epsilon_x = epsilon_y=epsilon_z = 1 . With these settings, the matrix of relative energy-well depths will be reduced to the Identity matrix if the chosen energy s…

Hello, I am running a phase equilibrium simulation where after compression and equilibration in a cubic box, the box is elongated 4 times the original length in the z-direction and temperature is quenched. Instantly, simulation was terminated with error message “ERROR on proc 1: Bond atom missing in image check”. I did some reading in the forum and found that I might need to incl…

Hi, I am using the LAMMPS version of 29Sep21 on my mac and trying to compile it as a shared library and enable expectation and PNG support. I used the command below: make serial mode=shlib LMP_INC="-DLAMMPS_PNG -DLAMMPS_EXCEPTIONS" JPG_LIB="-lpng", It says: " 1 post - 1 participant Read full topic