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- Title
Nanovortex evolution in entrance part of the 2D open type long nanocavity.
- Authors
KORDOS, A.; KUCABA-PIETAL, A.
- Abstract
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.
- Subjects
MOLECULAR dynamics; VORTEX methods; QUARTZ; VORTEX motion; FLUID dynamics
- Publication
Bulletin of the Polish Academy of Sciences: Technical Sciences, 2018, Vol 66, Issue 2, p119
- ISSN
0239-7528
- Publication type
Article
- DOI
10.24425/119065