LAMMPS (18 Feb 2013) # 2d SRD only test units lj atom_style atomic atom_modify first empty dimension 2 # create box with big lattice lattice sq 0.4 Lattice spacing in x,y,z = 1.58114 1.58114 1.58114 region box block 0 10 0 10 -0.5 0.5 create_box 1 box Created orthogonal box = (0 0 -0.790569) to (15.8114 15.8114 0.790569) 2 by 2 by 1 MPI processor grid # add SRD particles as hi density lattice lattice sq 0.4 Lattice spacing in x,y,z = 1.58114 1.58114 1.58114 region plane block 0 10 0 10 -0.001 0.001 lattice sq 85.0 Lattice spacing in x,y,z = 0.108465 0.108465 0.108465 create_atoms 1 region plane Created 21316 atoms group empty type 2 0 atoms in group empty mass 1 0.01 velocity all create 1.0 593849 loop geom # settings - need dummy empty group to enable no communication neighbor 0.3 bin neigh_modify delay 1 every 1 check no communicate single group empty # timestep is big and SRD frequency is 1 timestep 0.02 fix 1 all srd 1 NULL 1.0 0.25 49894 collision slip fix 2 all enforce2d # diagnostics thermo_style custom step temp f_1[7] etotal press f_1[3] f_1[4] f_1[6] thermo 100 #dump 1 all atom 250 dump.srd.pure #dump 1 all image 250 image.*.jpg type type zoom 1.6 adiam 0.2 #dump_modify 1 pad 4 run 5000 SRD info: SRD/big particles = 21316 0 big particle diameter max/min = 0 1e+20 SRD temperature & lamda = 1 0.2 SRD max distance & max velocity = 0.8 40 SRD grid counts: 63 63 1 SRD grid size: request, actual (xyz) = 0.25, 0.250974 0.250974 1.58114 SRD per actual grid cell = 5.37062 SRD viscosity = 0.439647 big/SRD mass density ratio = 0 # of rescaled SRD velocities = 0 ave/max all velocity = 13.2735 24.2873 Memory usage per processor = 1.34975 Mbytes Step Temp 1[7] TotEng Press 1[3] 1[4] 1[6] 0 1 0 0.99995309 85.26 0 0 0 100 0.97718565 3969 0.97713981 83.314849 0 0 0 200 0.95953504 3969 0.95949002 81.809957 0 0 0 300 0.94384163 3969 0.94379735 80.471937 0 0 0 400 0.93018267 3969 0.93013903 79.307374 0 0 0 500 0.9189656 3969 0.91892248 78.351007 0 0 0 600 0.90794939 3969 0.9079068 77.411765 0 0 0 700 0.899123 3969 0.89908081 76.659227 0 0 0 800 0.89045828 3969 0.89041651 75.920473 0 0 0 900 0.88189664 3969 0.88185527 75.190507 0 0 0 1000 0.87511065 3969 0.87506959 74.611934 0 0 0 1100 0.86844868 3969 0.86840794 74.043934 0 0 0 1200 0.86236759 3969 0.86232713 73.52546 0 0 0 1300 0.85644064 3969 0.85640047 73.020129 0 0 0 1400 0.85088468 3969 0.85084476 72.546428 0 0 0 1500 0.84573938 3969 0.8456997 72.107739 0 0 0 1600 0.84169541 3969 0.84165592 71.76295 0 0 0 1700 0.83686816 3969 0.8368289 71.351379 0 0 0 1800 0.83199161 3969 0.83195258 70.935605 0 0 0 1900 0.82774228 3969 0.82770345 70.573307 0 0 0 2000 0.82446049 3969 0.82442181 70.293501 0 0 0 2100 0.82065145 3969 0.82061295 69.968743 0 0 0 2200 0.81761922 3969 0.81758087 69.710215 0 0 0 2300 0.81355286 3969 0.8135147 69.363517 0 0 0 2400 0.81040375 3969 0.81036573 69.095024 0 0 0 2500 0.80651947 3969 0.80648164 68.76385 0 0 0 2600 0.80304949 3969 0.80301181 68.467999 0 0 0 2700 0.80027966 3969 0.80024211 68.231843 0 0 0 2800 0.79726989 3969 0.79723248 67.97523 0 0 0 2900 0.79526953 3969 0.79523222 67.80468 0 0 0 3000 0.79213985 3969 0.79210268 67.537843 0 0 0 3100 0.79008514 3969 0.79004808 67.362659 0 0 0 3200 0.78760949 3969 0.78757254 67.151585 0 0 0 3300 0.78482758 3969 0.78479077 66.9144 0 0 0 3400 0.78225219 3969 0.7822155 66.694822 0 0 0 3500 0.78019518 3969 0.78015858 66.519441 0 0 0 3600 0.7782201 3969 0.77818359 66.351045 0 0 0 3700 0.77626555 3969 0.77622913 66.184401 0 0 0 3800 0.77429464 3969 0.77425832 66.016361 0 0 0 3900 0.7728635 3969 0.77282724 65.894342 0 0 0 4000 0.7712408 3969 0.77120462 65.75599 0 0 0 4100 0.76928811 3969 0.76925202 65.589504 0 0 0 4200 0.76768117 3969 0.76764516 65.452497 0 0 0 4300 0.76576395 3969 0.76572802 65.289034 0 0 0 4400 0.76375476 3969 0.76371893 65.117731 0 0 0 4500 0.76222055 3969 0.76218479 64.986924 0 0 0 4600 0.76007803 3969 0.76004237 64.804252 0 0 0 4700 0.75921155 3969 0.75917594 64.730377 0 0 0 4800 0.75699084 3969 0.75695533 64.541039 0 0 0 4900 0.75590428 3969 0.75586882 64.448399 0 0 0 5000 0.75435525 3969 0.75431986 64.316328 0 0 0 Loop time of 1.81957 on 4 procs for 5000 steps with 21316 atoms Pair time (%) = 0 (0) Neigh time (%) = 0.941133 (51.7228) Comm time (%) = 0.315472 (17.3377) Outpt time (%) = 0.00200444 (0.11016) Other time (%) = 0.560961 (30.8293) Nlocal: 5329 ave 5410 max 5266 min Histogram: 1 0 0 2 0 0 0 0 0 1 Nghost: 0 ave 0 max 0 min Histogram: 4 0 0 0 0 0 0 0 0 0 Neighs: 0 ave 0 max 0 min Histogram: 4 0 0 0 0 0 0 0 0 0 Total # of neighbors = 0 Ave neighs/atom = 0 Neighbor list builds = 5000 Dangerous builds = 0