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

• Autorzy: Czerwińska J.
• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

micro- and nanofluidics; mesoscale simulations

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2007
• Tom: Vol. 55, nr 2
• Strony: 159--171
• Opis fizyczny: Bibliogr. 44 poz., rys.

Twórcy

autor

Czerwińska J.

• Institute of Fundamental Technological Research, Polis h Academy of Science, 21 Świętokrzyska St., 00-049 Warsaw, Poland,

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