[lammps-users] Parameter SEED

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1

Hello,i have a question, could you tell more about the parameter SEED ?

What exactly does this parameter mean? Is it a distribution number?

i have a command:

velocity flow create 1.0 482748 temp mobile

so, 482748 - what is it?
Are there any rules to specify this parameter?
Does a result depend from this parameter?

from the manual:

velocity command

Syntax:

velocity group-ID style args keyword value ...

  • group-ID = ID of group of atoms whose velocity will be changed

  • style = create or set or scale or ramp or zero

      *create* args = temp seed
    temp = temperature value (temperature units)
    **seed** = random # seed (positive integer)

Thanks a lot, Sergey R.

2

Hello,

i have a question, could you tell more about the parameter SEED ?
What exactly does this parameter mean? Is it a distribution number?

initialization of the pseudo random number generator.
setting it allows to makes runs reproducible.

cheers,
   axel.