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On 23/02/2012 10:26 AM, Jose Borreguero wrote:
<blockquote
cite="mid:CAEee4gW3vPb=sNc4P7JER2H9O44diQLoa_67c9512pywaj3Lmg@mail.gmail.com"
type="cite">
<div class="gmail_quote"><font color="#000099">Dear GROMACS users,<br>
<br>
While simulating a DLPC membrane, I noticed that it tends to
diffuse along the normal (Z-axis) component. Is there a
'standard' restrain that is used to prevent such diffusion?<br>
The first option I thought was to restrain the center of mass
of the whole membrane along the Z-axis, but I don't know what
is a reasonable value for the force constant.<br>
If anyone has any experience dealing with this kind of
problem, please do reply.</font><br>
</div>
</blockquote>
<font color="#000099"><br>
Diffusion of the center of mass of the whole system is something
that can be removed by an existing mechanism. See manual 7.3.3<br>
<br>
Mark<br>
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