How to Make a Particle self propelled in LAMMPS

Dear all,
I want to simulate self propelled particle in LAMMPS. But I don’t have much idea about LAMMPS and want to know in what way I can make the Particle Self Propelled in LAMMPS?

Thanks in Advance

-Ligesh

A while back I wrote a fix for this that got the job done but it wasn’t polished enough for inclusion in lammps at the time and then I moved on to other things. I can dig it up for you later today.

Conceptually, the fix just applied a constant force along a per-particle vector so that, combined with fix langevin, it would move like an active Brownian particle.

Thank You all… I will check with your suggestions…

I filed a pull request with a slightly cleaned-up version of my old code here: https://github.com/lammps/lammps/pull/1178/files