Particle life-time

Submitted by ZhaochenJiang on Wed, 11/18/2015 - 16:25

Dear all,

Is it possible to control the life-time of particles in LIGGGHTS?

I want to simulate some solid-like droplets in the jet. Because of huge particle number, I think control the particle life time is an idea.

Thank you for any suggestions.

Best regards,
Zhaochen

j-kerbl's picture

j-kerbl | Mon, 11/30/2015 - 14:09

Hi Zhaochen,

do you mean to delete atoms after a certain time?
You can create a group with all particles, where the particle-ID is bigger than a certain value. Then you can delete this group.

Cheers
Josef

ZhaochenJiang | Wed, 02/17/2016 - 15:02

Hi Josef,

If I use compute G1 pair/gran/local id to get the IDs of collision particles. Is it possible to delete these particles with IDs stored in c_G1[1]?

Thank you!

Zhaochen

ZhaochenJiang | Wed, 03/16/2016 - 08:56

Hi Josef,

As you suggested, I use group to create a certain particle group1. Then, use fix group1 massflow/mesh to delete this group of particles in the CFD/DEM. Now the problem is the group command does not work, all particles are deleted. Is it possible to group particles during CFD/DEM?

Best regards,
Zhaochen