<p>Hi Xianwei Wang,</p>
<p>According to the information in your mail (the comments from the mdp file), it's just the other way around: phi is the amplitude and a is the phase.</p>
<p>Cheers,</p>
<p>Tsjerk<br>
</p>
<p><blockquote type="cite">On Mar 13, 2012 3:11 AM, "Xianwei Wang" <<a href="mailto:wangxianwei1228@163.com">wangxianwei1228@163.com</a>> wrote:<br><br><div style="line-height:1.7;font-size:14px;font-family:arial">
<i><i>Dear gmx users:<br> </i></i><i>I would like to apply electric field to my
</i><i> simulation box.</i><i><i> I have already read the manual and I added this into mpd file as manual told:<br>; Electric fields = </i></i><i><i>7.1e-10V/nm</i></i><br><i><i>; Format is number of terms (int) and for all terms an amplitude (real) =<br>
; and a phase angle (real) =<br>E_x = 1.0 7.1e-10 0<br>;E_xt =<br>;E_y =<br>;E_yt =<br>;E_z =<br>;E_zt =<br><br>as I know, this line </i></i><i><i>E_x = 1.0 7.1e-10 0</i></i><i><i> would add </i></i>x direct
ion <i><i>7.1e-10V/nm</i> electric field, but in the MD simulation log file the three number is <br> efield-x:<br> n = 1<br> a = 0.000000e+00<br> phi = 7.100000e-10<br> efield-xt:<br> n = 0<br>
efield-y:<br> n = 0<br> efield-yt:<br> n = 0<br> efield-z:<br> n = 0<br> efield-zt:<br> n = 0<br>why </i><i> phi = 7.100000e-10 and a=0? Are a and phi the strength of the electric field and phase of the cosine?<br>
<br><br><br></i>
<pre><i><i><br></i></i></pre></div><br><br><span title="neteasefooter"><span></span></span><br>--<br>
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