Internal flow characteristics in Spill-return pressure-swirl atomizers
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU133314" target="_blank" >RIV/00216305:26210/19:PU133314 - isvavai.cz</a>
Výsledek na webu
<a href="https://ilass19.sciencesconf.org/247487" target="_blank" >https://ilass19.sciencesconf.org/247487</a>
DOI - Digital Object Identifier
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Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Internal flow characteristics in Spill-return pressure-swirl atomizers
Popis výsledku v původním jazyce
The spray produced by pressure-swirl atomizers strongly depends on the character of their internal flow. Flow field inside a swirl chamber of small pressure-swirl spill-return atomizers was examined using high-speed imaging with image post processing using an in-house Matlab code. The dimensions of the production atomizers did not allow direct visualization of their internal flow, so a scaled modular, transparent Plexiglas model was used. Its flow characteristics were matched with the originally sized atomizer using dimensionless numbers (Reynolds, Swirl, Froude numbers). The test conditions were limited to the inlet overpressure of 5 kPa and spill-to-feed ratio, SFR = 0–0.75. Various spill-return configurations were compared in terms of the spatial and temporal behaviour of the internal air-core, and liquid sheet thickness and its perturbations. The only difference among the tested configurations was the geometrical arrangement of the spill-line (SL) orifice through which the liquid is spilled away.
Název v anglickém jazyce
Internal flow characteristics in Spill-return pressure-swirl atomizers
Popis výsledku anglicky
The spray produced by pressure-swirl atomizers strongly depends on the character of their internal flow. Flow field inside a swirl chamber of small pressure-swirl spill-return atomizers was examined using high-speed imaging with image post processing using an in-house Matlab code. The dimensions of the production atomizers did not allow direct visualization of their internal flow, so a scaled modular, transparent Plexiglas model was used. Its flow characteristics were matched with the originally sized atomizer using dimensionless numbers (Reynolds, Swirl, Froude numbers). The test conditions were limited to the inlet overpressure of 5 kPa and spill-to-feed ratio, SFR = 0–0.75. Various spill-return configurations were compared in terms of the spatial and temporal behaviour of the internal air-core, and liquid sheet thickness and its perturbations. The only difference among the tested configurations was the geometrical arrangement of the spill-line (SL) orifice through which the liquid is spilled away.
Klasifikace
Druh
O - Ostatní výsledky
CEP obor
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OECD FORD obor
10305 - Fluids and plasma physics (including surface physics)
Návaznosti výsledku
Projekt
Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů