Unsteadiness and Spatio-Temporal Statistics in Intermediate Effervescent Spray Region
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F15%3APU115676" target="_blank" >RIV/00216305:26210/15:PU115676 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.3303/CET1545172" target="_blank" >http://dx.doi.org/10.3303/CET1545172</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3303/CET1545172" target="_blank" >10.3303/CET1545172</a>
Alternative languages
Result language
angličtina
Original language name
Unsteadiness and Spatio-Temporal Statistics in Intermediate Effervescent Spray Region
Original language description
Multipoint statistics theory of the ideal spray was used to investigate temporal spray stability. The analysis focused on intermediate spray region, i.e. between dense and self-similar regions. Arrival time and diameter are the studied characteristics of the droplets. Two size classes, with droplet diameters of 50 and 100 μm, were selected for steadiness analysis. The two size classes were used to investigate temporal droplet behaviour using their arrival time. Chi-square test was used to provide unsteadiness criterion. Data were collected by dual-phase Doppler anemometry (PDA) at three planes perpendicular to the spray axis (x/D = 20,40,60). At each plane, there were several measuring points spanning the spray radius, starting from the spray centreline (r/x = 0) to the spray cone boundary (r/x = 0.5). The effervescent breakup mechanism is shown to produce spray unsteadiness, which is however significant only away from spray axis. In a narrow cone around the spray axis, the spray is steady on a significance level of 5 %. This result provides guidance for assessment of effervescent spray unsteadiness. The data show unexpectedly similar levels of unsteadiness for gas-liquid ratios between 5 and 15 %. This has implications for combustion applications of effervescent spray, where unsteadiness is an undesirable property.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
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
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
CHEMICAL ENGINEERING TRANSACTIONS - VOL.45
ISBN
978-88-95608-36-5
ISSN
2283-9216
e-ISSN
—
Number of pages
6
Pages from-to
1027-1032
Publisher name
Aidic Servizi Srl
Place of publication
Milano, Italy
Event location
Kuching
Event date
Aug 23, 2015
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000366034200172