Quantification of cavitating flows with neutron imaging
Abstract The current experimental investigation demonstrates the capability of neutron imaging to quantify cavitation, in terms of vapour content, within an orifice of an abruptly constricting geometry. The morphology of different cavitation regimes setting in was properly visualised owing to the hi...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-11-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-024-76588-3 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1846172127304089600 |
|---|---|
| author | I. K. Karathanassis M. Heidari-Koochi F. Koukouvinis L. Weiss P. Trtik D. Spivey M. Wensing M. Gavaises |
| author_facet | I. K. Karathanassis M. Heidari-Koochi F. Koukouvinis L. Weiss P. Trtik D. Spivey M. Wensing M. Gavaises |
| author_sort | I. K. Karathanassis |
| collection | DOAJ |
| description | Abstract The current experimental investigation demonstrates the capability of neutron imaging to quantify cavitation, in terms of vapour content, within an orifice of an abruptly constricting geometry. The morphology of different cavitation regimes setting in was properly visualised owing to the high spatial resolution of 16 μm achieved, given the extensive field of view of 12.9 × 12.9 mm2 offered by the imaging set-up. At a second step, the method was proven capable of highlighting subtle differences between fluids of different rheological properties. More specifically, a reference liquid was comparatively assessed against a counterpart additised with a Quaternary Ammonium Salt (QAS) agent, thus obtaining a viscoelastic behaviour. In accordance with previous studies, it was verified, yet in a quantifiable manner, that the presence of viscoelastic additives affects the overall cavitation topology by promoting the formation of more localised vortical cavities rather than cloud-like structures occupying a larger portion of the orifice core. To the authors’ best knowledge, the present work is the first to demonstrate that neutron imaging is suitable for quantifying in-nozzle cavitating flow at the micrometre level, consequently elucidating the distinct forms of vaporous structures that arise. The potential of incorporating neutron irradiation for the quantification of two-phase flows in metallic microfluidics devices has been established. |
| format | Article |
| id | doaj-art-c5275b27fe214b8ca4695c5e1a2984e8 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-c5275b27fe214b8ca4695c5e1a2984e82024-11-10T12:17:39ZengNature PortfolioScientific Reports2045-23222024-11-0114111710.1038/s41598-024-76588-3Quantification of cavitating flows with neutron imagingI. K. Karathanassis0M. Heidari-Koochi1F. Koukouvinis2L. Weiss3P. Trtik4D. Spivey5M. Wensing6M. Gavaises7School of Science & Technology, City, University of LondonSchool of Science & Technology, City, University of LondonSchool of Science & Technology, City, University of LondonChair of Technical Thermodynamics, Friedrich-Alexander-Universität Erlangen-NürnbergLaboratory for Neutron Scattering and Imaging, Paul Scherrer Institute (PSI)Lubrizol European Research and Development CentreChair of Technical Thermodynamics, Friedrich-Alexander-Universität Erlangen-NürnbergSchool of Science & Technology, City, University of LondonAbstract The current experimental investigation demonstrates the capability of neutron imaging to quantify cavitation, in terms of vapour content, within an orifice of an abruptly constricting geometry. The morphology of different cavitation regimes setting in was properly visualised owing to the high spatial resolution of 16 μm achieved, given the extensive field of view of 12.9 × 12.9 mm2 offered by the imaging set-up. At a second step, the method was proven capable of highlighting subtle differences between fluids of different rheological properties. More specifically, a reference liquid was comparatively assessed against a counterpart additised with a Quaternary Ammonium Salt (QAS) agent, thus obtaining a viscoelastic behaviour. In accordance with previous studies, it was verified, yet in a quantifiable manner, that the presence of viscoelastic additives affects the overall cavitation topology by promoting the formation of more localised vortical cavities rather than cloud-like structures occupying a larger portion of the orifice core. To the authors’ best knowledge, the present work is the first to demonstrate that neutron imaging is suitable for quantifying in-nozzle cavitating flow at the micrometre level, consequently elucidating the distinct forms of vaporous structures that arise. The potential of incorporating neutron irradiation for the quantification of two-phase flows in metallic microfluidics devices has been established.https://doi.org/10.1038/s41598-024-76588-3Irradiation imagingMicrofluidicsTwo-phase flowsPhase changeViscoelasticity |
| spellingShingle | I. K. Karathanassis M. Heidari-Koochi F. Koukouvinis L. Weiss P. Trtik D. Spivey M. Wensing M. Gavaises Quantification of cavitating flows with neutron imaging Scientific Reports Irradiation imaging Microfluidics Two-phase flows Phase change Viscoelasticity |
| title | Quantification of cavitating flows with neutron imaging |
| title_full | Quantification of cavitating flows with neutron imaging |
| title_fullStr | Quantification of cavitating flows with neutron imaging |
| title_full_unstemmed | Quantification of cavitating flows with neutron imaging |
| title_short | Quantification of cavitating flows with neutron imaging |
| title_sort | quantification of cavitating flows with neutron imaging |
| topic | Irradiation imaging Microfluidics Two-phase flows Phase change Viscoelasticity |
| url | https://doi.org/10.1038/s41598-024-76588-3 |
| work_keys_str_mv | AT ikkarathanassis quantificationofcavitatingflowswithneutronimaging AT mheidarikoochi quantificationofcavitatingflowswithneutronimaging AT fkoukouvinis quantificationofcavitatingflowswithneutronimaging AT lweiss quantificationofcavitatingflowswithneutronimaging AT ptrtik quantificationofcavitatingflowswithneutronimaging AT dspivey quantificationofcavitatingflowswithneutronimaging AT mwensing quantificationofcavitatingflowswithneutronimaging AT mgavaises quantificationofcavitatingflowswithneutronimaging |