[lammps-users] DPD pair style and pair coefficient

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1

can someone clarify what each of the variables means in the pair_style field and pair_coefficient field for DPD. Namely in pair_coefficient which variable is gamma, A, cuttoff, and sigma.

thanks,

ryan

2

It's been a while since I have looked at DPD simulations, but this is what
I remember (and the manual doesn't seem to disagree):

pair_style dpd TEMPERATURE CUTOFF SEED

pair_coeff * * A GAMMA [OPTIONAL CUTOFF]

sigma is not specified explicitly, since it's given by sqrt(2 * T * gamma).

Hope this helps,

  Lutz