Numerical study of diffusion in a conical tube
M.V. Vázquez , L. Dagdug

Depto. de Fisica, Universidad Autonoma Metropolitana - Iztapalapa, Mexico, 09340, Distrito Federal

Abstract: Monte Carlo computational simulations were ran to calculate the mean-survival time (MST) of a brownian particle in a conical tube, varying geometrical parameters such as the tube's wall slope and axial length. Theoretically the MST satisfies a backward equation whose solution relates our experimentally determined MST to an effective diffusion, so we can compare this value against several models. Some findings are that both directions of transport are not equivalent and the existing models do not satisfactorily explain the observed behavior.