Comparison of Y-jet and OIL effervescent atomizers based on internal and external two-phase flow characteristics

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F16%3APU121074" target="_blank" >RIV/00216305:26210/16:PU121074 - isvavai.cz</a>
Result on the web
<a href="http://www.epj-conferences.org/articles/epjconf/abs/2016/09/epjconf_efm2016_02078/epjconf_efm2016_02078.html" target="_blank" >http://www.epj-conferences.org/articles/epjconf/abs/2016/09/epjconf_efm2016_02078/epjconf_efm2016_02078.html</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/201611402078" target="_blank" >10.1051/epjconf/201611402078</a>

Result language
angličtina
Original language name
Comparison of Y-jet and OIL effervescent atomizers based on internal and external two-phase flow characteristics
Original language description
Presented paper focuses on spraying of two viscous liquids (μ = 60 and 143 mPa s) by two types of twinfluid atomizers with internal mixing. We compared the well-known Y-jet atomizer with the less known, “outside in liquid” (OIL), configuration of the effervescent atomizer. The required liquid viscosity was achieved by using the water-maltodextrin solutions of different concentrations. Both the liquids were sprayed at two gas inlet pressures (Δp = 0.14 and 0.28 MPa) and various gas-to-liquid ratios (GLR = 2.5%, 5%, 10% and 20%). The comparison was focused on four characteristics: liquid flow-rate (for the same working regimes, defined by Δp and GLR), internal flow regimes, Weber numbers of a liquid breakup (We) and droplet sizes. A high-speed camera and Malvern Spraytec laser diffraction system were used to obtain necessary experimental data. Comparing the results of our experiments, we can state that for both the liquids the OIL atomizer reached higher liquid flow-rates at corresponding working regimes, it was typical by annular internal flow and higher We in the near-nozzle region at all the working regimes. As a result, it produced considerably smaller droplets than the second tested atomizing device, especially for GLR < 10%.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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