Nanovortex evolution in entrance part of the 2D open type long nanocavity

• Autorzy: Kordos A. , Kucaba-Piętal A.

Identyfikatory

DOI

10.24425/119065

• Języki publikacji: EN

Abstrakty

EN

Non-equilibrium molecular dynamics method (NEMD) is applied to investigate a formation process of water nanovortex in 7 nm wide nanocavity (aspect ratio of which was equal to 3.6). The flow in the nanocavity was induced by Poiseuille 2D water nanoflow in a main nanochannel, to which the nanocavity is situated perpendicularly. The wall of main channel and the nanocavity is made from quartz. Flow is induced by applying constant force to molecules inside the main channel. Based on NEMD simulation data, the sequence of images representing water velocity vector fields was obtained at constant time intervals equal to 1 ns, which shows vortex formation mechanism. Flow field images analysis indicates that the shape and centre position of the nanovortex vary slightly each nanosecond, nevertheless, the structure remains stable in the flow field at the entrance to the nanocavity.

Słowa kluczowe

EN

nanofluidics; molecular dynamics; nanocavity; nanovortices; nanodevices

PL

dynamika molekularna; nanowgłębienia; nanowiry; nanourządzenia

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2018
• Tom: Vol. 66, nr 2
• Strony: 119--125
• Opis fizyczny: Bibliogr. 42 poz., rys., wykr., tab.

Twórcy

autor

Kordos A.

• Rzeszow University of Technology, Faculty of Mechanical Engineering and Aeronautics, Powstancow Warszawy 8 Av., 35-959 Rzeszow, Poland

autor

Kucaba-Piętal A.

• Rzeszow University of Technology, Faculty of Mechanical Engineering and Aeronautics, Powstancow Warszawy 8 Av., 35-959 Rzeszow, Poland

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).