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Re: [ESPResSo-users] Simulation of fluid using LB-method


From: Ulf Schiller
Subject: Re: [ESPResSo-users] Simulation of fluid using LB-method
Date: Thu, 30 Jan 2014 13:59:30 +0100
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On 01/30/2014 01:56 PM, Ulf Schiller wrote:
Hi,

if you are using bounce-back BC, there is an analytic solution for the
LBE - see Luo (1997), J. Stat. Phys., 88, 913-926 that should be
reproduced exactly.

For simple bounce-back, the location of the wall depends on viscosity.
So that may also contribute to the deviation. In your case, the max
velocity is off by almost 10% which seems too much (but that's just a
gut feeling).

More like 5% than 10%, sorry.

--
Dr. Ulf D. Schiller                        Building 04.16, Room 3006
Institute of Complex Systems (ICS-2)       Phone:   +49 2461 61-6144
Forschungszentrum J├╝lich, Germany          Fax:     +49 2461 61-3180

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