Tracer diffusion in a crowded cylindrical channel
نویسندگان
چکیده
منابع مشابه
Diffusion in a crowded environment.
We analyze a pair of diffusion equations which are derived in the infinite system-size limit from a microscopic, individual based, stochastic model. Deviations from the conventional Fickian picture are found which ultimately relate to the depletion of resources on which the particles rely. The macroscopic equations are studied both analytically and numerically, and are shown to yield anomalous ...
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A dual'tracer technique has been developed for use in experiments in low-level atmospheric dispersion and deposition. The system is considered unique in two respects. First, it permits definition of thc airborne concentrations of a cloud of small particles representative of a true aerosol and simultaneously the deposition of larger particles on the soil and vegetation beneath. Second, the depos...
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We study the diffusion of a Brownian probe particle of size R in a dilute dispersion of active Brownian particles of size a, characteristic swim speed U_{0}, reorientation time τ_{R}, and mechanical energy k_{s}T_{s}=ζ_{a}U_{0}^{2}τ_{R}/6, where ζ_{a} is the Stokes drag coefficient of a swimmer. The probe has a thermal diffusivity D_{P}=k_{B}T/ζ_{P}, where k_{B}T is the thermal energy of the so...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2013
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.87.062709