# question in poiseuille water flow in nano-channel

hi dears
I have simulated poiseuille water flow in nano-channel with height of 31.6 angstrom (simulation box is cubic 31.66 angstrom=10 sigma ) with copper walls with LAMMPS. and sigma is diameter of water molecules for SPCE water model (3.166 angstrom). temperature is 300 K , density is 995 kg/m^3 , knudsen number is 0.1 , how much is value of the REYNOLDS number in this flow? can you guide me please?
i need know this value.
thanks so much

2014-09-10 17:56 GMT+02:00 Ilia Iliana <[email protected]>:

hi dears
I have simulated poiseuille water flow in nano-channel with height of 31.6
angstrom (simulation box is cubic 31.66 angstrom=10 sigma ) with copper
walls with LAMMPS. and sigma is diameter of water molecules for SPCE water
model (3.166 angstrom). temperature is 300 K , density is 995 kg/m^3 ,
knudsen number is 0.1 , how much is value of the REYNOLDS number in this
flow? can you guide me please?
i need know this value.

All you need is the typical / average flow velocity, the typical
lateral size of the channel (for instance, the height of the channel
if you used a slab geometry), the density and dynamic viscosity of
SPC/E water, and the formula:

http://en.wikipedia.org/wiki/Reynolds_number#Flow_in_pipe

Best regards,
Laurent

thank you,

2014-09-10 17:56 GMT+02:00 Ilia Iliana <[email protected]…1319…>:

hi dears
I have simulated poiseuille water flow in nano-channel with height of 31.6
angstrom (simulation box is cubic 31.66 angstrom=10 sigma ) with copper
walls with LAMMPS. and sigma is diameter of water molecules for SPCE water
model (3.166 angstrom). temperature is 300 K , density is 995 kg/m^3 ,
knudsen number is 0.1 , how much is value of the REYNOLDS number in this
flow? can you guide me please?
i need know this value.

All you need is the typical / average flow velocity, the typical
lateral size of the channel (for instance, the height of the channel
if you used a slab geometry), the density and dynamic viscosity of
SPC/E water, and the formula:

http://en.wikipedia.org/wiki/Reynolds_number#Flow_in_pipe

Best regards,
Laurent