Hi ....<div><br /></div><div>In metadynamics one does not set target values for CVs.</div><div>In case you want to run constraint dynamics from A to B, please use the constraint section and set target, target growth, and target limit.</div><div><br /></div><div>Regards</div><div>Marcella<br /><br /></div><div class="gmail_quote"><div dir="auto" class="gmail_attr">On Thursday, December 19, 2024 at 10:35:50 AM UTC+1 val...@umich.edu wrote:<br/></div><blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Hi,<div><br></div><div>I am setting up a metadynamics simulation to move a Hydrogen away from a specific Oxygen. I am planning on setting up a distance based collective variable. The DISTANCE function under COLVAR does not give a final value to move towards. How do I do this?</div><div><br></div><div><span style="color:rgb(0,0,0)"><span dir="auto" aria-label="&MOTION &MD
@INCLUDE ${intg_file}
STEPS 1000
TIMESTEP 0.5
TEMPERATURE 300 &END MD &FREE_ENERGY &METADYN
DO_HILLS .TRUE. ! unbiased MTD run
NT_HILLS 60 !
WW 0.5E-3 ! height of the gaussian to spawn - default = 0.1 hartree &METAVAR ! for each COLVAR, a METAVAR section has to be set
COLVAR 1
SCALE 1 ! change only when do_hills true &END METAVAR &PRINT &COLVAR
COMMON_ITERATION_LEVELS 3 &EACH
MD 1 &END EACH &END COLVAR &HILLS
COMMON_ITERATION_LEVELS 3 &EACH
MD 1 &END EACH &END HILLS &END PRINT &END METADYN &END FREE_ENERGY &PRINT
@INCLUDE ${mdio_file} &END &END MOTION &FORCE_EVAL
METHOD QS
STRESS_TENSOR ANALYTICAL
@INCLUDE ${qmps_file} &SUBSYS
@INCLUDE ${qmbs_file} &CELL
@INCLUDE ${cell_file}
CELL_FILE_FORMAT cp2k
PERIODIC XYZ &END &TOPOLOGY
COORD_FILE_NAME ${crds_file}
COORD_FILE_FORMAT xyz &END TOPOLOGY &COLVAR &DISTANCE
ATOMS 0 15 ! Select the middle O and H to pull
AXIS XYZ &END DISTANCE &END COLVAR &END SUBSYS &END FORCE_EVAL"><p>&MOTION<br>&MD<br> @INCLUDE ${intg_file}<br><br> STEPS 1000<br> TIMESTEP 0.5<br> TEMPERATURE 300<br><br>&END MD<br>&FREE_ENERGY<br>&METADYN<br> DO_HILLS .TRUE. ! unbiased MTD run<br> NT_HILLS 60 ! <br> WW 0.5E-3 ! height of the gaussian to spawn - default = 0.1 hartree</p><p> </p><p> &METAVAR ! for each COLVAR, a METAVAR section has to be set<br> COLVAR 1<br> SCALE 1 ! change only when do_hills true<br>&END METAVAR<br>&PRINT<br>&COLVAR<br> COMMON_ITERATION_LEVELS 3<br>&EACH<br> MD 1<br>&END EACH<br>&END COLVAR</p><p> </p><p> &HILLS<br> COMMON_ITERATION_LEVELS 3<br>&EACH<br> MD 1<br>&END EACH<br>&END HILLS<br>&END PRINT<br>&END METADYN<br>&END FREE_ENERGY<br>&PRINT<br> @INCLUDE ${mdio_file}<br>&END<br>&END MOTION</p><p> </p><p> </p><p>&FORCE_EVAL<br> METHOD QS<br> STRESS_TENSOR ANALYTICAL<br> @INCLUDE ${qmps_file}<br><br>&SUBSYS<br> @INCLUDE ${qmbs_file}<br>&CELL<br> @INCLUDE ${cell_file}<br> CELL_FILE_FORMAT cp2k<br> PERIODIC XYZ<br>&END<br><br>&TOPOLOGY<br> COORD_FILE_NAME ${crds_file}<br> COORD_FILE_FORMAT xyz<br>&END TOPOLOGY</p><p> </p><p> &COLVAR<br>&DISTANCE<br> ATOMS 0 15 ! Select the middle O and H to pull<br> AXIS XYZ <br>&END DISTANCE<br>&END COLVAR<br>&END SUBSYS</p><p> </p><p>&END FORCE_EVAL<br></p></span><i style="min-height:1px;width:1px;opacity:0.001"></i><span style="min-height:0px"></span><i style="min-height:1px;width:1px;opacity:0.001"></i><span dir="auto">has context menu</span></span><br></div></blockquote></div>
<p></p>
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