Yıl 2018, Cilt 2, Sayı 3, Sayfalar 1 - 9 2018-09-30

Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model

Yağmur GÜLEÇ [1] , Alvaro DIEZ [2] , Francesco CONTINO [3]

19 24

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.

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.

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.

spray, momentum flux, cfd
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Yazar: Yağmur GÜLEÇ (Sorumlu Yazar)
Kurum: İZMİR YÜKSEK TEKNOLOJİ ENSTİTÜSÜ
Ülke: Turkey


Yazar: Alvaro DIEZ
Kurum: IZMIR INSTITUTE OF TECHNOLOGY
Ülke: Turkey


Yazar: Francesco CONTINO
Kurum: Vrije Universitait Brussel
Ülke: Belgium


Bibtex @araştırma makalesi { ijastech423293, journal = {International Journal of Automotive Science and Technology}, issn = {2587-0963}, address = {Otomotiv Mühendisleri Derneği}, year = {2018}, volume = {2}, pages = {1 - 9}, doi = {}, title = {Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model}, key = {cite}, author = {GÜLEÇ, Yağmur and CONTINO, Francesco and DIEZ, Alvaro} }
APA GÜLEÇ, Y , DIEZ, A , CONTINO, F . (2018). Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model. International Journal of Automotive Science and Technology, 2 (3), 1-9. Retrieved from http://dergipark.gov.tr/ijastech/issue/39477/423293
MLA GÜLEÇ, Y , DIEZ, A , CONTINO, F . "Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model". International Journal of Automotive Science and Technology 2 (2018): 1-9 <http://dergipark.gov.tr/ijastech/issue/39477/423293>
Chicago GÜLEÇ, Y , DIEZ, A , CONTINO, F . "Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model". International Journal of Automotive Science and Technology 2 (2018): 1-9
RIS TY - JOUR T1 - Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model AU - Yağmur GÜLEÇ , Alvaro DIEZ , Francesco CONTINO Y1 - 2018 PY - 2018 N1 - DO - T2 - International Journal of Automotive Science and Technology JF - Journal JO - JOR SP - 1 EP - 9 VL - 2 IS - 3 SN - 2587-0963- M3 - UR - Y2 - 2018 ER -
EndNote %0 International Journal of Automotive Science and Technology Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model %A Yağmur GÜLEÇ , Alvaro DIEZ , Francesco CONTINO %T Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model %D 2018 %J International Journal of Automotive Science and Technology %P 2587-0963- %V 2 %N 3 %R %U
ISNAD GÜLEÇ, Yağmur , DIEZ, Alvaro , CONTINO, Francesco . "Numerical Modeling of Flashing Sprays Using a Hybrid Breakup Model". International Journal of Automotive Science and Technology 2 / 3 (Eylül 2018): 1-9.