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Fast X-ray imaging of cavitating flows
ID
Khlifa, Ilyass
(
Avtor
),
ID
Vabre, Alexandre
(
Avtor
),
ID
Hočevar, Marko
(
Avtor
),
ID
Fezzaa, Kamel
(
Avtor
),
ID
Fuzier, Sylvie
(
Avtor
),
ID
Roussette, Olivier
(
Avtor
),
ID
Coutier-Delgosha, Olivier
(
Avtor
)
URL - Izvorni URL, za dostop obiščite
https://link.springer.com/article/10.1007/s00348-017-2426-7
PDF - Predstavitvena datoteka,
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(4,09 MB)
MD5: 7DC7D404B8FB4CD4DE9722776A891A79
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Izvleček
A new method based on ultra-fast X-ray imaging was developed in this work for the investigation of the dynamics and the structures of complex two-phase flows. In this paper, cavitation was created inside a millimetric 2D Venturi-type test section, while seeding particles were injected into the flow. Thanks to the phase-contrast enhancement technique provided by the APS (Advanced Photon Source) synchrotron beam, high definition X-ray images of the complex cavitating flows were obtained. These images contain valuable information about both the liquid and the gaseous phases. By means of image processing, the two phases were separated, and velocity fields of each phase were, therefore, calculated using image cross-correlations. The local vapour volume fractions were also obtained, thanks to the local intensity levels within the recorded images. These simultaneous measurements, provided by this new technique, afford more insight into the structure and the dynamic of two-phase flows as well as the interactions between them, and hence enable to improve our understanding of their behaviour. In the case of cavitating flows inside a Venturi-type test section, the X-ray measurements demonstrate, for the first time, the presence of significant slip velocities between the phases within sheet cavities for both steady and unsteady flow configurations.
Jezik:
Angleški jezik
Ključne besede:
cavitation
,
measurements
,
x rays
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Recenzirani rokopis
Poslano v recenzijo:
17.08.2017
Datum sprejetja članka:
03.09.2017
Datum objave:
20.10.2017
Leto izida:
2017
Št. strani:
Str. 1-22
Številčenje:
Vol. 58
PID:
20.500.12556/RUL-126671
UDK:
620.193.16:615.849.11(045)
ISSN pri članku:
0723-4864
DOI:
10.1007/s00348-017-2426-7
COBISS.SI-ID:
15738139
Datum objave v RUL:
03.05.2021
Število ogledov:
956
Število prenosov:
301
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Objavi na:
Gradivo je del revije
Naslov:
Experiments in fluids
Skrajšan naslov:
Exp. fluids
Založnik:
Springer Nature
ISSN:
0723-4864
COBISS.SI-ID:
7427589
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:
01.11.2017
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
kavitacija
,
meritve
,
rentgenski žarki
Projekti
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Electricité de France (EDF-R&D)
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
CETIM
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