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Algebraic decay of velocity fluctuations in a confined fluid
Hagen, M. H. J.; Pagonabarraga Mora, Ignacio; Lowe, C. P.; Frenkel, Daan, 1948-
Universitat de Barcelona
Computer simulations of a colloidal particle suspended in a fluid confined by rigid walls show that, at long times, the velocity correlation function decays with a negative algebraic tail. The exponent depends on the confining geometry, rather than the spatial dimensionality. We can account for the tail by using a simple mode-coupling theory which exploits the fact that the sound wave generated by a moving particle becomes diffusive.
30-06-2010
Química física
Reologia
Simulació per ordinador
Physical and theoretical chemistry
Rheology
Computer simulation
(c) American Physical Society, 1997
Artículo
American Physical Society
         

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