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  • Free surface lubrication of rotating cylinders by impacting Newtonian liquid jet
    Bizjan, Benjamin ; Širok, Brane ; Blagojevič, Marko, vodarstvo in geotehnika, 1996-
    Free surface lubrication of rotating cylinders by Newtonian liquid jets was investigated at different impingement positions, jet- and circumferential velocities. The interaction between impinging ... round laminar jet and rotating surface was characterised by high-speed imaging. Compared to flat surface impingement, the liquid deposition mechanism is more complex and often accompanied by phenomena such as splashing, jet deflection and formation of radial surface stripes. Liquid splashing initially develops in direct deposition regime due to hydraulic jump-induced droplet shedding, transitioning to lamella instability splash at higher Reynolds numbers. The critical Reynolds number for splash onset is of same order of magnitude as for flat surface impingement and fairly constant at low relative jet impingement angles, but increases exponentially when angle approaches 90°. Liquid film width and thickness were both determined proportional to the square root of the jet/surface velocity ratio, with respective power law models in good agreement with measured values.
    Vir: Lubrication science. - ISSN 0954-0075 (Vol. 33, iss. 8, Dec. 2021, str. 439-449)
    Vrsta gradiva - članek, sestavni del
    Leto - 2021
    Jezik - angleški
    COBISS.SI-ID - 79474691

vir: Lubrication science. - ISSN 0954-0075 (Vol. 33, iss. 8, Dec. 2021, str. 439-449)
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