LIGGGHTS® - User Forum

Hi everyone,

I tried to run my simulations in liggghts and open it in Paraview. I tried to modify the dump file using custom/vtk and I tried to install the liggghts plugin in paraview as well but all my visualization seems to appear in squarish appearance as shown in the image i provided in this forum post.

I heard some used pizza.py and lpp for the visualization but I am unsure on how to use them. I installed pizza.py by using the steps:

Hi all

I am using ParaView to view LIGGGHTS dump files after converting to vtk format. However, the rendering is not so good, as I see only the centres particles. How can I change this, so that I can view complete particles? (I have attached an image showing what I mean)

Thanks,
Joel

Hi all

I was wondering if LIGGGHTS had the feature of a conducting wall, where I could set the wall conductivity. I could only find the option to set wall temperature, but not a conducting wall.

I don't want to measure wall properties. Instead, I just want to change boundary conditions on the particles near the wall, so that, instead of having to interact with a wall at fixed temperature, the particles are now interacting with a wall whose heat flux is given by q=-k(dT/dx)

Hi everyone,

I was trying to compute a moving laser on a heat bed. I successfully define the heating at one region which is defining the coordinate of the region of the heat bed but I am trying to make that region to move ( just like a laser moving on the heat bed) where my x coordinate moves from 0,1,2,3,4,5....or should I say its something like the function x=x+1. Do you know what command that I can use to resolve this issue?

Can someone help me with this?

Thanks.

Hi every one....!
i am trying to simulate a mixer that contain glass beads with impeller in the middle.I am a new user of LIGGGHTS, i don't know how to make geometries for this setup.I means which components to be made in CAD?? which CAD software is to be used ???currently i made a vessel and impeller in PRO E and saved in STL format.when i use this then vessel geometry does'nt import nd i get problem with this.

I am studying the granular flow on inclined plane with different angels. In my simulation, x is flow direction and z is perpendicular to the plane. On achieving the steady state, profile for velocity, volume fraction, shear rate, shear stress and pressure seems fine. But when profile for shear stress in direction perpendicular to the plane (in my case it is zz) and shear stress in xz direction are not in accordance with the profile obtained from the momentum balance equation.

As I am still trying to figure out why is this happening? Can anyone suggest to make it right?

I am a beginner and trying to figure my way around liggghts. I am using 3x materials (1x big particle, 1xsmall particle, 1xbin). As the particles are of difference sizes which command do I use to define the different particle sizes and how would this affect the neighbour lists.

thanks in advance for your help.

Hi,

I am trying to download and install liggghts. I went to the download page and it was written that we need to register/login to have access to download. But even the, I am unable to find a download section.

Please help me out.

Thank You,
Yesaswi

Hi every one....!
i am trying to simulate a mixer that contain glass beads with impeller in the middle.I am a new user of LIGGGHTS, i don't know how to make geometries for this setup.I means which components to be made in CAD?? which CAD software is to be used ???currently i made a vessel and impeller in PRO E and saved in STL format.when i use this then vessel geometry does'nt import nd i get problem with this.

I attached my input file also here,please any who have idea about this,kindly help me

Hi All,

I just want to have clarity on this one.

We have 2 materials say m1 & m2 (peaches and oranges) and they are conveyed on conveyor belt which is boundary material, b1. We have 5 possible interactions here i.e (m1-m1), , (m2-m2), (m1-m2=m2-m1), (b1-m1) and (b1-m2).