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http://dx.doi.org/10.5407/JKSV.2018.16.1.048

Experimental Study on the Characteristics of Micro Jet Flow Using Digital Microscopic Holography  

Lee, Haneol (School of Mechanical Engineering, Chungnam National University)
Lee, Jaiho (Korea Hydro & Nuclear Power Co.)
Shin, Weon Gyu (School of Mechanical Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society of Visualization / v.16, no.1, 2018 , pp. 48-53 More about this Journal
Abstract
In this study, the effect of injection pressure on the column diameter and droplet velocity of liquid jet with the weakly turbulent Rayleigh-like breakup mode is experimentally studied using digital microscopic holography (DMH). The injection nozzle has the diameter of $50{\mu}m$ and injection pressure is varied from 0.1 to 0.4 MPa. When the micro liquid jet is injected into still air, the double-pulsed holograms was recorded on a CCD sensor and numerically reconstructed in order to obtain well focused images. In this study, the liquid column diameter from $50{\mu}m$ orifice nozzle is shown to be changed slightly but the droplet velocity is increased proportionally as the injection pressure is increased.
Keywords
Digital microscopic holography; Micro liquid jet; Drop breakup; Numerical reconstruction;
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