Importance of Geometrical Factors on Spray Characteristics of Spill-return Atomisers
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU138562" target="_blank" >RIV/00216305:26210/21:PU138562 - isvavai.cz</a>
Result on the web
<a href="https://arc.aiaa.org/doi/full/10.2514/1.B38066" target="_blank" >https://arc.aiaa.org/doi/full/10.2514/1.B38066</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2514/1.B38066" target="_blank" >10.2514/1.B38066</a>
Alternative languages
Result language
angličtina
Original language name
Importance of Geometrical Factors on Spray Characteristics of Spill-return Atomisers
Original language description
An experimental investigation into small pressure-swirl spill-return atomizers was made to determine the effect of the entry port number, swirl chamber shape, spill-line design and the manufacturing precision on the spray quality and stability. The atomizers were experimentally studied using phase-Doppler anemometry, high-speed visualization and mechanical patternation. The Jet A-1 fuel was sprayed at inlet pressures of 0.5, 1.0 and 1.5 MPa and for spill-to-feed ratios of 0, 0.4 and 0.8. The chamber shape influenced the spray characteristics of the simplex atomizers only moderately with no systematic effect of conical chambers to the others. The spray was found to be circumferentially heterogeneous; its uniformity improved with increase in the pressure while the effect of swirling port number was negligible. Atomizers with axial spill orifice demonstrated strong spray pulsations at a spill-to-feed ratio of zero. A periodic decay of the air core was identified as a possible reason for the pulsations. Atomizers with the off-axis spill orifices always produced a stable spray. The atomizers with tangential inlet ports provided a finer spray than those with the helical ports. The manufacturing precision, axial symmetry and matching of the surfaces of connected parts were found important for the spray symmetry and homogeneity.
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
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)
Others
Publication year
2021
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 Propulsion and Power
ISSN
0748-4658
e-ISSN
1533-3876
Volume of the periodical
37
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
408-418
UT code for WoS article
000658185200007
EID of the result in the Scopus database
2-s2.0-85116463716