Adaptation of conical liquid sheet and spray morphologies to cross-flowing gas
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU147173" target="_blank" >RIV/00216305:26210/24:PU147173 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0301932223003348?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0301932223003348?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ijmultiphaseflow.2023.104714" target="_blank" >10.1016/j.ijmultiphaseflow.2023.104714</a>
Alternative languages
Result language
angličtina
Original language name
Adaptation of conical liquid sheet and spray morphologies to cross-flowing gas
Original language description
A variety of industrial devices use liquid injection into the traverse stream of air. Ambient flow changes the spray characteristics, which can alter a system's function. Two different spill-return pressure-swirl atomizers (SRA) were investigated under cross -flow. One of the tested atomizers generates a conical liquid sheet with shorter breakup lengths due to reduced internal air-core stability. Phase Doppler anemometer (PDA) was used for 2D velocity and droplet size measurements, along with high-speed visualization to record instantaneous spray behaviour. A wide range of operating parameters was tested, e.g., inlet pressure (pl) ranging from 0.25 MPa to 1 MPa, spill-to-feed ratio (SFR) from 0 to 0.9, and cross -flow velocity from 0 to 32 m/s. As the cross -flow velocity increases, the spray starts to tilt and the breakup length (lb) shortens as a result of increased aerodynamic forces. This reduces the differences between atomizers. Moreover, the droplet diameter depends on the lb, yet no semiempirical model was found to accurately predict the droplet sizes. A map of breakup modes was established, and a transition point from long- to short-wave mode was identified. The Linear Stability Analysis of the liquid sheet breakup was used and compared with a semi-empirical approach for the first time for the SRA and cross -flow conditions. The results imply that considering only quiescent ambient conditions during atomizer development might not lead to the optimal design.
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
20300 - Mechanical engineering
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
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
ISSN
0301-9322
e-ISSN
1879-3533
Volume of the periodical
172
Issue of the periodical within the volume
february 2024
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
„“-„“
UT code for WoS article
001163473900001
EID of the result in the Scopus database
2-s2.0-85182265803