@article{article_423293, title={Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model}, journal={International Journal of Automotive Science And Technology}, volume={2}, pages={1–9}, year={2018}, author={Güleç, Yağmur and Dıez, Alvaro and Contıno, Francesco}, keywords={spray,momentum flux,cfd}, abstract={<p> </p> <p style="margin-left:.2in;margin-right:.16in;text-indent:.13in;margin-top:0in;line-height:.15in;" align="justify"> <font style="font-size:9pt;" size="2"> <font style="font-size:10pt;" size="2">Fuel
droplets may undergo flash-boiling conditions when they are injected
into a cylinder at higher than saturation temperature for the
corresponding chamber pressure, resulting in a rapid evaporation.
Such conditions lead to wider spray angles, finer droplets and
shorter penetration. Based on current experimental investigations,
such conditions may promote a more homogeneous fuel-air mixture and a
faster evaporation compared to traditional methods. </font> <font color="#000000"> </font> </font> </p> <p style="margin-left:.2in;margin-right:.16in;text-indent:.13in;margin-top:0in;line-height:.15in;" align="justify"> <font style="font-size:9pt;" size="2"> <font style="font-size:10pt;" size="2">This
investigation presents a numerical study in OpenFOAM focusing on the
modeling of gasoline direct injection sprays under flash and
non-flash boiling conditions. The model was implemented in a scenario
where already superheated and compressed fuel at 100 bar was injected
into a chamber at a pressure lower than its saturation pressure at
the corresponding temperature. A new hybrid breakup method has been
implemented along with a momentum flux post-processing tool for the
characterization of the initials conditions. </font> <font color="#000000"> </font> </font> </p> <p style="margin-left:.2in;margin-right:.16in;text-indent:.13in;margin-top:0in;line-height:.15in;" align="justify"> <font style="font-size:10pt;" size="2">It was found that better
prediction accuracy in evaporation rate was obtained. Spray
penetration was also better modeled for flash boiling conditions
compared with traditional breakup models. </font> </p>}, number={3}, publisher={Otomotiv Mühendisleri Derneği}