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  • A numerical study on the influence of liquid properties on gas-focused micro-jets
    Zahoor, Rizwan ...
    In this paper we present a numerical study on the influence of liquid properties on gas-focused micro-jets, such as used for sample delivery in serial femtosecond crystallography. The study is based ... on solving mixture formulation of Newtonian, compressible two-phase model with the finite volume method and algebraic volume of fluid for treatment of the phase-interface. The density, viscosity and surface tension of the focused fluid span around the material properties of pure water in the range of -/+30%, thus representing a large range of possible sample delivery fluids. Fixed liquid and helium gas flow rates are used for jet focusing and the length, diameter, velocity and temperature of the jet are assessed as a function of material properties of the liquid. A thicker and slower jet is observed in case of increased density and surface tension of the focused fluid, while change in liquid viscosity has no effect on flow characteristics. This study expands previous work on experimental validation of the model: influence of operating parameters (Zahoor et al., 2018a), nozzle geometry (Zahoor et al. 2018b) and types of focusing gas (Zahoor et al. 2018c) on the liquid jet behaviour and thus provides a complete computational fluid dynamics insight into jet production.
    Source: Progress in computational fluid dynamics. - ISSN 1468-4349 (Vol. 20, no. 2, 2020, str. 1-13)
    Type of material - article, component part ; adult, serious
    Publish date - 2020
    Language - english
    COBISS.SI-ID - 16803867

    Link(s):

    https://www.inderscience.com/info/ingeneral/forthcoming.php?jcode=pcfd#82935
    DOI

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