# water flow in nanochannel

hi dears , i am simulating poiseuille water flow in nanochannel, force in x direction , the wall of channel is rough(rectangular roughness) .
the dim of chnnel are 30,y,30 angstrome , and the height of roughnesses is 3angstrome , and its lenght in x direction is 10 angstrome ,
i want to investigate the density and velocity profile in this nanochannel , what bin method is good for this situation?
this fix ave/spatial in below what are the good value for good bins in flow ?

fix 1 flow ave/spatial 50 200 10000 z a b x c d density/numberâ€¦

the profile in near next to roughness of wall is important for me
what is the good value for a,b,c,d ?
thanks all dears .

hi dears , i am simulating poiseuille water flow in nanochannel, force in x
direction , the wall of channel is rough(rectangular roughness) .
the dim of chnnel are 30,y,30 angstrome , and the height of roughnesses is
3angstrome , and its lenght in x direction is 10 angstrome ,
i want to investigate the density and velocity profile in this nanochannel ,
what bin method is good for this situation?
this fix ave/spatial in below what are the good value for good bins in flow
?
fix 1 flow ave/spatial 50 200 10000 z a b x c d density/number...

the profile in near next to roughness of wall is important for me
what is the good value for a,b,c,d ?

i doubt that anybody can give you a specific recommendation to such a
problem specific (and not at all LAMMPS specific) question. the way
people usually solve these kind of problems, is to set up a (small and
fast to simulate) test system and experiment until they find a setting
that suits their needs. "the scientific method", so to speak.

axel.