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<DIV><FONT face=Arial size=2>I want to do a simulation without periodic boundary
condition, but I am confused by the meaning of pbc=no.</FONT></DIV>
<DIV><FONT face=Arial size=2>It may have two meanings. </FONT></DIV>
<DIV><FONT face=Arial size=2>First, no box, then liquid water becomes vapour
because pressure is zero.</FONT></DIV>
<DIV><FONT face=Arial size=2>Second, there is a box. any atom who collides the
box will be reflexed. but here no image box.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>The simulation I intend to do is the second one,
but gromacs seems to do the first one.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>who can clarify it?
thanks</FONT></DIV></BODY></HTML>