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Mar. 13th, 2004 12:50 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
baloonworldImprovements
Thus, to improve the efficiency of the algorithm, it is normal to add another radius rkill at a significant distance from the aggregate, once the wandering particle passes rkill, it is assumed that it will not interact with the aggregate, and it is destroyed, a new wandering particle being added as in step 2/
The step described above essentially assumes that when a particle reaches the radius rkill, it is equally likely to re-approach the aggregate from any direction. If r kill was actually at infinity, this would be a reasonable assumption. When rkill is merely very large there is a possibility that this will in someway skew the growth of the aggregate away from the random direction that the particle left in.
It seams reasonable that over time, there will be as many particals leaving in any given direction, and his skewing will even out, but to keep the simulation as physical as possible, it is advantageous to set rkill as large as possible.
This, of course, rather defeats the object of rkill in the first place, but it does mean that the limitation is a known, controlled quantity.
Thus, to improve the efficiency of the algorithm, it is normal to add another radius rkill at a significant distance from the aggregate, once the wandering particle passes rkill, it is assumed that it will not interact with the aggregate, and it is destroyed, a new wandering particle being added as in step 2/
The step described above essentially assumes that when a particle reaches the radius rkill, it is equally likely to re-approach the aggregate from any direction. If r kill was actually at infinity, this would be a reasonable assumption. When rkill is merely very large there is a possibility that this will in someway skew the growth of the aggregate away from the random direction that the particle left in.
It seams reasonable that over time, there will be as many particals leaving in any given direction, and his skewing will even out, but to keep the simulation as physical as possible, it is advantageous to set rkill as large as possible.
This, of course, rather defeats the object of rkill in the first place, but it does mean that the limitation is a known, controlled quantity.
