alec-glisman / Swimming-in-Potential-Flow

Study dynamics of inertial active matter in a potential fluid (irrotational, incompressible).
https://doi.org/10.1017/jfm.2022.946
GNU General Public License v3.0
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Test collinear swimmer wall system with no internal dynamics #15

Closed alec-glisman closed 2 years ago

alec-glisman commented 2 years ago

TODO:

My expectations

I expect that by symmetry the swimmer will not rotate along the x-z plane (collinear along x initially, wall at z = 0). If all particles are moving with the same velocity, then we do not get the dipole moment being stronger on one end at a given time due to larger articulation velocity magnitudes at that instant.

I also expect that the net displacement of the wall system will be less than that of the internal dynamics due to the dipole moment being linearly proportional to particle velocity. The average body velocity is O(1/1000) of the articulation velocity amplitude, so the interactions with the wall should be much less.