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

From: Ulf Schiller
Subject: Re: [ESPResSo-devel] [ESPResSo-users] Simulation of fluid using LB-method
Date: Thu, 30 Jan 2014 14:50:37 +0100
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On 01/30/2014 02:39 PM, Ulf Schiller wrote:
On 01/30/2014 02:37 PM, Georg Rempfer wrote:
About the "pow(lbpar.__agrid,4)*tau*tau" issue. That has puzzled us
several times as well, but we are very confident that it is correct. I
can not remember the specific reason (too long ago) but I remember that
Owen checked that and Joost and I checked again, very thoroughly. I
think if you actually track down the values from input to application it
works out.

Possible, but just to make sure you don't get the right result for the
wrong reason: The units are incorrect here, so there must be a canceling
factor elsewhere.

Which might be here...

    p_u[0] = j[0]/rho/tau/lbpar.agrid;
    p_u[1] = j[1]/rho/tau/lbpar.agrid;
    p_u[2] = j[2]/rho/tau/lbpar.agrid;

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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