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Re: [lammps-users] Signal to noise ratio and sampling time.
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Re: [lammps-users] Signal to noise ratio and sampling time.


From: Steve Plimpton <sjplimp@...24...>
Date: Wed, 9 Aug 2017 08:18:29 -0600

Hard to say.  But you can examine the current (or time averaged)
velocity profile as often as you like as a run proceeds.  Just
dump it to a file via the fix ave/chunk command, e.g. with
1d spatial bins.

Steve

On Tue, Aug 8, 2017 at 11:00 AM, Eduardo Ramos <eduardo.ramos-fernandez14@...68...> wrote:
Hi all,

I am wondering if there is some kind of rule of thumb to know for how
long an SLLOD simulation has to be run to gather sufficient statistics
to reconstruct the linear velocity profile and from there calculate the
viscosity (Tsampling(srate) = ???). In case there is, would you also
provide me with the rationale behind it?


Regards,

Eduardo


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