dc.contributor.author | Kozul, Melissa | |
dc.contributor.author | Koothur, Vipin | |
dc.contributor.author | Worth, Nicholas | |
dc.contributor.author | Dawson, James | |
dc.date.accessioned | 2019-08-27T07:51:12Z | |
dc.date.available | 2019-08-27T07:51:12Z | |
dc.date.created | 2019-08-07T11:23:29Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Experiments in Fluids. 2019, 60 (8), . | nb_NO |
dc.identifier.issn | 0723-4864 | |
dc.identifier.uri | http://hdl.handle.net/11250/2611095 | |
dc.description.abstract | We propose a novel robust 3D particle tracking technique based on a scanning laser setup. The method yields Lagrangian statistics in densely seeded turbulent flows with good spatial and temporal resolution, overcoming some of the inherent difficulty with line-of-sight-based volumetric methods. To do this, we have developed an effective triangulation method greatly reducing ghost particle reconstruction using images from two cameras. A laser sheet is rapidly traversed (‘scanned’) across a measurement volume illuminating only a thin slice of the flow at a time. Particle images are taken at closely spaced, overlapping nominal laser sheet locations giving multiple intensity recordings for each individual particle. The laser-sheet intensity varies as a Gaussian across its thickness, which is here exploited to deduce the particle’s probable location along the scan direction to sub-sheet number resolution by fitting a similar Gaussian profile to the particle’s multiple intensity recordings. The method is presently verified via numerical experiment using a DNS database. Following successful reconstruction of a time series of 3D particle fields, particle tracks are formed from which all components of Lagrangian velocity and acceleration are calculated. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Springer | nb_NO |
dc.title | A scanning particle tracking velocimetry technique for high‑Reynolds number turbulent flows | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 14 | nb_NO |
dc.source.volume | 60 | nb_NO |
dc.source.journal | Experiments in Fluids | nb_NO |
dc.source.issue | 8 | nb_NO |
dc.identifier.doi | 10.1007/s00348-019-2777-3 | |
dc.identifier.cristin | 1714539 | |
dc.description.localcode | This is a post-peer-review, pre-copyedit version of an article published in Experiments in Fluids. Locked until 1 August 2020 due to copyright restrictions. The final authenticated version is available online at: https://doi.org/10.1007/s00348-019-2777-3 | nb_NO |
cristin.unitcode | 194,64,25,0 | |
cristin.unitname | Institutt for energi- og prosessteknikk | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |