[gmx-users] viscosity

Marcelo Vanean vanean22 at gmail.com
Sun Jun 2 06:40:01 CEST 2013


*On 2013-06-01 17:11, Marcelo Vanean wrote:
*
>
> *On 2013-06-01 02:24, Marcelo Vanean wrote:
>
> *
>>
>> *Hello to everyone. In version 4.5.5, calculating the viscosity with the
>> command g_energy -vis, the generated files (eviscoi.xvg, eviscoi.xvg and
>> visco.xvg) are inconsistent. The file evisco.xvg, for example, gives a
>> value of zero for viscosity using the Einstein relation. Another question
>> in 4.0.7, the file eviscoi.xvg is approximately a straight line, whereas
>> in
>> version 4.5.5 not. Why the Gromacs 4.0.7 gives the result in this way?
>> Evidently, there is an inconsistency in these different results. Help me,
>> please.
>>
>>
>> *
>
> *I used the same energy file (ener.edr) and I get this results:
> http://help-gromacs.blogspot.com.br/. The files visco.xvg are equals.
>
> *

*Maybe you can post the energy file on that site as well.

Have you tried to compute the pressure autocorrelation (using g_energy)?*

I didn't the pressure autocorrelation. A question: what does this analysis
tell me?
I posted the energy file here:
http://www.4shared.com/file/SSAU1reN/ener.html.



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