quire on lammps

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#1

hi sir,
I am Nandlal pingua from IIT kanpur, INDIA new user of LAMMPS.

Question :-

  1. I have a doubts that is what formate should i used for time-step. e.g-either 2*10e-8 or 0.00000002. in both case simulation work results are different so, what formate i will use in time steps? one more thing that, is there important role of time-step in simulation? I have seen if i increase or decrease the time-step in that case one error shown after first iteration all atoms lost. what is reason behind i am not getting.?

  2. In lattice-command, How i will known that which style i will choose for simulation? e.g fcc or bcc or hcp or sc etc

  3. How neighbour list effect the simulation? is it is high or low build

Thank You

#2

Why are you posting the same quest. again?

Sagar