Understanding the fuel spray characteristics in the near-nozzle region for a pressure swirl atomizer
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU155328" target="_blank" >RIV/00216305:26210/24:PU155328 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S002185022400017X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S002185022400017X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jaerosci.2024.106350" target="_blank" >10.1016/j.jaerosci.2024.106350</a>
Alternative languages
Result language
angličtina
Original language name
Understanding the fuel spray characteristics in the near-nozzle region for a pressure swirl atomizer
Original language description
In the present study, an experimental investigation is carried out to analyze the Jet A-1 fuel spray characteristics in the near-nozzle region (NNR) of a swirl atomizer for varying injection pressures represented by the liquid Weber number. The droplet characteristics such as mean drop size, velocity components, and their spatial distributions are obtained using phase Doppler anemometer at two different axial locations (Z = 5 and 12.5 mm) from the orifice exit in the NNR. Interestingly, the droplet axial and radial velocities for all droplet sizes, in the hollow-region due to the momentum transfer from air entrainment process are independent of each other while in the core-region carrying the momentum from the liquid sheet are strongly coupled with each other. Upon further exploration of the effect of air entrainment, we discovered that the droplet velocities in the hollow region failed to follow the self-similarity particularly for the smallest drop size class. On the other hand, the drop size distribution in the core-region of the NNR is effectively predicted by gamma distribution, compared to the Rosin-Rammler distribution indicative of the ligament mediated breakup. The global mean drop size in the NNR is compared to various empirical correlations and theoretical models available in literature. We anticipate that the outcome of the current work will enhance the understanding of swirl injection spraying processes in engine fuel combustion and be of great utility for researchers engaged in spray modelling.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)
Result continuities
Project
<a href="/en/project/GA22-17806S" target="_blank" >GA22-17806S: Advanced liquid film and spray systems for gas cleaning and sorption purposes</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF AEROSOL SCIENCE
ISSN
0021-8502
e-ISSN
1879-1964
Volume of the periodical
1
Issue of the periodical within the volume
178
Country of publishing house
GB - UNITED KINGDOM
Number of pages
17
Pages from-to
1-17
UT code for WoS article
001203053200001
EID of the result in the Scopus database
2-s2.0-85186959903