Abstract
The behavior of a test particle in a rarefied gas of classical particles is investigated. considering different interaction mechanisms (specular and diffuse reflection, respectively). For large mass ratio between test and gas particles, analytical expressions for the linear friction coefficient are derived. Moreover, the existence of directed motion of asymmetric test particles with distinct initial conditions (but in the absence of any gradients) is shown. The analytical results are supported by a numerical simulation technique applicable to systems with any mass ratio, which is described here in detail.
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Handrich, K., Ludwig, F.P. Friction coefficients and directed motion of asymmetric test particles. J Stat Phys 86, 1067–1087 (1997). https://doi.org/10.1007/BF02183614
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DOI: https://doi.org/10.1007/BF02183614