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Re: Question about Espresso

From: Rudolf Weeber
Subject: Re: Question about Espresso
Date: Sun, 18 Apr 2021 11:05:31 +0200
User-agent: Mutt/1.9.4 (2018-02-28)

Hi Mohamed,
On Fri, Apr 16, 2021 at 10:01:41PM -0400, Mohamed Hilali wrote:
> Is possible to simulate hydrodynamic particle interactions in a fluid of high 
> concentration particles using Espresso? By high concentration particles I 
> mean a concentration greater than or equal to 50 % by volume. 
>From a technical standpoint, Espresso does not put a limit on the 
>concentration of particles. However, the resolution of hydrodynamics solvers 
>such as lattice-Boltzmann is limited by the lattice constant. If the particle 
>concentration is high, the distance between two particles surfaces might often 
>be comparable to the lattice constant. So, either you need a very high 
>resolution, or you'd need to consider so-called lubrication corrections.

This is not specific to Espresso, though.

Regards, Rudolf

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