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***** Analyzer for particle simulation problems *****
***** (c) 1997 Kees Lemmens *****
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Problem to be analyzed : ../TF/1024p_mesh_1.par
Problem characteristics :
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Number of particles : 1024
Center of mass speed (x,y) : +0.000000, +0.000000
Total kinetic energy : +0.000000
Total potential energy : -3196246.238663
Total energy : -3196246.238663
Total momentum X direction : +0.000000
Total momentum Y direction : +0.000000
Used randomizer for distance info : Yes
Used Tree-Code for acceleration info : Yes
Tree dimensions (wxh) : 12.40x9.30
Average minimum interparticle distance : +0.150000
Minimum interparticle distance found : +0.150000
Maximum interparticle distance found : +7.590949
Standard deviation interparticle distance : +0.000000
Standard deviation (percentage) : 0.000006 %
Average displacement in timeinterval : +0.206770
Maximum displacement in timeinterval : +0.492233
Average distance/displacement ratio : +0.725442
Number of detected collisions : 0
Collision detect distance : 0.001000
Mesh dimension for autocorrelation : 128
Average value for density autocorrelation in testarea: 0.516667
Problem analysis :
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This seems a quite uniform density distribution, suited for
Particle-Mesh. The average particle displacement within the intended
interval seems to be of the same order as the average interparticle
distance. This implies that some collisions may occur.
*****************************************************
***** Analyzer for particle simulation problems *****
***** (c) 1997 Kees Lemmens *****
*****************************************************
Problem to be analyzed : ../TF/300p_clr_1.par
Problem characteristics :
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Number of particles : 300
Center of mass speed (x,y) : +0.000000, +0.000000
Total kinetic energy : +0.000000
Total potential energy : -7013460.021299
Total energy : -7013460.021299
Total momentum X direction : +0.000000
Total momentum Y direction : +0.000000
Used randomizer for distance info : Yes
Used Tree-Code for acceleration info : Yes
Tree dimensions (wxh) : 11.94x7.95
Average minimum interparticle distance : +0.056207
Minimum interparticle distance found : +0.002539
Maximum interparticle distance found : +6.085522
Standard deviation interparticle distance : +0.031029
Standard deviation (percentage) : 55.205967 %
Average displacement in timeinterval : +1.231851
Maximum displacement in timeinterval : +41.471891
Average distance/displacement ratio : +0.045628
Number of detected collisions : 0
Collision detect distance : 0.001000
Mesh dimension for autocorrelation : 512
Average value for density autocorrelation in testarea: 0.043666
Problem analysis :
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This looks like a NON-uniform density distribution.
The average particle displacement within the intended interval seems
to be much larger than the average interparticle distance, so many
(near) collisions are very likely to happen.