Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2009-02-23
Physics
Condensed Matter
Statistical Mechanics
5 Pag. 8 Figures
Scientific paper
This work proposes a method for the two-dimensional simulation of Brownian particles in a fluid with restrictions. The method is based on simple numerical rules between two matrices. One of the matrix represent the identification of all particles over which are adapted statistics rules for particles movement, the results are mapped over other matrix which represent the particles positions. The rules for the movement are established by a statistic mechanism allowing assign random or non-random movement direction. The same probably of movement for each direction for each time step is assumed, in order to be agreed with the physics conditions of Brownian movement in a two dimensional network. The root mean square displacement of all particles was calculated in a large number of simulations, together with the translational velocity of particles in order to compare with theoretical values of diffusion coefficient and the validation of model. Also, the time duration for some simulations vs. the number of particles and concentration was calculated.
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