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2 2007

2 Czerwińska J.

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Self-diffusion effects in micro scale liquids. Numerical study by a dissipative particle dynamics method

100%

Czerwińska J.

2007

tom Vol. 55, nr 2

159-171

Mesoscale flows of liquid are of great importance for various nano- and biotechnology applications. Continuum model do not properly capture the physical phenomena related to the diffusion effects, such as Brownian motion. Molecular approach on the other band, is computationally too expensive to provide information relevant for engineering applications. Hence, the need for a mesoscale approach is apparent. In recent years many mesoscale models have been developed, particularly to study flows of gas. However, mesoscale behaviour of liquid substantially differs tram that of gas. This paper presents a numerical study of micro-liquids phenomena by a Voronoi Dissipative Particle Dynamics method. The method bas its origin tram the material science field and is one of very few numerical techniques which ran describe correctly molecular diffusion processes in mesoscale liquids. This paper proves that correct prediction of molecular diffusion effects plays predominant role on the correct prediction of behaviour of immersed structures in the mesoscopic flow.

Self-diffusion effects in micro scale liquids. Numerical study by a dissipative particle dynamics method

80%

Czerwińska J.

nr 2