Negative capillary-pressure-induced cavitation probability in nanochannels.
作者： Ruijing Zhang , Yoshifumi Ikoma , Teruaki Motooka
DOI: 10.1088/0957-4484/21/10/105706
关键词: Mechanics 、 Capillary pressure 、 Cross section (physics) 、 Critical radius 、 Water flow 、 Cavitation 、 Computational fluid dynamics 、 Strength of materials 、 Planar 、 Materials science
摘要: The capillarity-induced negative pressure of water flow has been investigated in nanochannels a rectangular cross section by using computational fluid dynamics (CFD) simulation. As consequent effect pressure, the cavitation probability analyzed numerically. numerical relation between critical radius (R(c)) and geometrical characteristics channels shows that does not occur uniform (UCS), since 2R(c) is larger than smallest dimension channel. However, it may non-uniform (NUCS), except for planar or high aspect ratio channels. inequality height width favorable absence cavitation. findings can also be applied to elliptical circular section. results show influence on probability, which important engineer channel structure order avoid undesirable filling problem 'cavitation' during process.
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