LIGGGHTS® - User Forum

LIGGGHTS® related topics can be discussed here: discussion about models, installation, feature requests and general discussion

Where is a problem ? (newbie)

Submitted by PavolPalicka on Wed, 07/09/2014 - 09:08

Hi,
I am new in this field of investigation, so I am trying to do some modifications in LIGGGHTS examples. My goal is to use DEM and CFD for modelling of the Shaft furnace for raw material thermal treatment.

I will be thankful for any advice (or better, for correction of attached code)

I will be also very thankful if anybody send me more of yours own examples or advices how to effectively learn use this tools. (pavol.palicka@tuke.sk)

Best regards
Paul

Here is LIGGGHTS output of my existing problem:

Drag force in LIGGGHTS

Submitted by rahulsoni on Tue, 07/08/2014 - 14:18

Hello everyone,

I am using LIGGGHTS for a fair time. Done with number of simulations. But for one, I had to add external electric forces. For which, I have also added the drag components (0.5*drag_coefficient*rho_air*projected_surface*velocity*velocity).

For my case these components are resulting into substantial amount even to nulify the applied electric force. (Drag coefficient calculated from literature as 1.47 for the velocity range in use).

LIGGGHTS compiling problem

Submitted by hse3 on Sat, 07/05/2014 - 16:07

Hi Everybody,

I am trying to set up CFDEMproject on ubuntu 14.04 LTS, and I am following the same exact steps on githubAccess_public.pdf.

I installed OpenFOAM-2.3.x successfully, and everything went fine up to

cfdemSysTest

and I get some information confirming that the paths are set correctly.

Then I started compiling LIGGGHTS(R) by typing:
cfdemCompLIG

Building Paraview in Mac

Submitted by d.pourjafar on Sat, 06/28/2014 - 22:35

Hi all,

I need the header files of the Paraview in order to build a plugin. To have them, in the Paraview building manual it says I have to implement this variable "PARAVIEW_INSTALL_DEVELOPMENT_FILES" during configuring it. But there's no such option in Mac OS (as the manual also says).

So was wondering if anybody knows a way how to introduce this variable in Mac OS? Or a way how to get the header files after installation in order to build a plugin?

Thanks a ton!
Danial

Total number of particle template is not equal to the number of atoms

Submitted by subhodhk on Tue, 06/24/2014 - 18:04

Hi

I am trying simulate a mixing process and I am using two types of atomic particles. After I ran the simulation I found that there is a mismatch between the total number After I ran this simulation my LIGGGHTS log file had these messages:

LIGGGHTS installation issue in cluster

Submitted by rahulsoni on Tue, 06/24/2014 - 08:49

Hello everyone

I along with my colleague have been trying to install LIGGGHTS 2.3.7 in Altix ICE 8400 EX Supercomputer. Information about the cluster can be found at http://www.cmmacs.ernet.in/index.php/en/33-highlights/143-csir-cmmacs-al...

However, after a lot of efforts it got installed but while running liggghts it gives the message Segmentation fault (core dumped>

output for a fix massflow/mesh

Submitted by msandli on Mon, 06/23/2014 - 20:45

I have a small simulation running with a fix massflow/mesh command which I assume is running correctly because it spits out numbers. However, I don't understand what the numbers mean, and the manual page only confuses me more. For example, it says the second vector component is a particle count, but the second number is my output is a small decimal.

Please help me understand this output, or tell what other fixes or computes I need to do to it. Please see my output data attached below.

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