FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1965114472> ?p ?o ?g. }

• W1965114472 abstract "Toensuregoodparticleimagevelocimetrycorrelations,itisnecessarytocharacterizetheimportantvariablesthat control image acquisition and image analysis. Among these, image spot size as it changes across the entire imaging surfacebearsinvestigation.Therefore, wedescribeanerroranalysisforsubpixel resolutionofcorrelation peaksus- ingWhittaker' smethod.Theseresultsseta toleranceonoptimumimagespotsizes.Typicallensesarethenanalyzed usingray-tracesoftware,toascertainwhatopticalparametersandcameramisalignmentsareallowablewithinthese optimum tolerances. We then describe an alignment procedure that allows us to set a camera to those tolerances. O acquire high-quality particle image velocimetry (PIV) data, it is necessary to use a cross-correlation technique, for exam- ple, two-color or image-shifted PIV, to align carefully the optical system and use an optimized data analysis package. In recent work performed at the Colorado School of Mines (CSM), two PIV inves- tigations resultedin1 )an assessmentofthe effects ofparticleimage spot size on correlation accuracy, 2 ) determination of the minimum spot size for least error, and 3 ) the development of an experimental system that can reliably generate this minimum spot size. One of these projects involved the development of PIV analy- sis software that generates vector data from PIV images (Ref. 1; T. Drouillard and M. Linne, Experiments in Fluids, manuscript in preparation ). In that work, several techniques for resolving cor- relation peaks were evaluated. These included the basic centroid method, Whittaker' s reconstruction, an analytical three-pointGaus- sian e t, and a numerical e ve-point Gaussian e t using the Marquardt method. An assessment of reconstruction errors was included. The least error was produced by the e ve-point Gaussian e t using Mar- quardt nonlinear e tting, whereas Whittaker' s reconstruction was a close second. Furthermore, it was found that the size of the cor- relation peak (directly related to particle image spot size ) has the greatest effect on the accuracy of the reconstruction algorithm. This sets a tolerance on the image spot size. That work is discussed in detail by Drouillard and Linne (manuscript in preparation ). Asecond projectinvolvedthe development of a method by which a PIV experimental apparatus may beconsistently and reproducibly aligned to meet this tolerance on spot size. 2 This topic is of primary importance to chemical e lm-based techniques, where turnaround time is very long. It also has implications for digital systems, espe- cially when it is necessary to align a camera across a large system, from within a wind tunnel, for example. A portion of this inves- tigation included modeling photographic lens performance under ideal and nonideal conditions using computer-based geometric ray tracing.These resultsprovide insightinto howvariousexperimental cone gurations can lead to spot size variation, which in turn affects the accuracy of PIV analysis. Based on such results, a system for alignment of the experiment was developed. That work is the pri- mary focus of this paper." @default.
• W1965114472 created "2016-06-24" @default.
• W1965114472 creator A5064193477 @default.
• W1965114472 creator A5066947087 @default.
• W1965114472 creator A5077107046 @default.
• W1965114472 date "2000-09-01" @default.
• W1965114472 modified "2023-09-24" @default.
• W1965114472 title "Optical Alignment Tolerances and Techniques for Particle Image Velocimetry" @default.
• W1965114472 cites W1985367233 @default.
• W1965114472 cites W1996395797 @default.
• W1965114472 cites W2030089976 @default.
• W1965114472 cites W2064604903 @default.
• W1965114472 cites W2118944048 @default.
• W1965114472 doi "https://doi.org/10.2514/2.1151" @default.
• W1965114472 hasPublicationYear "2000" @default.
• W1965114472 type Work @default.
• W1965114472 sameAs 1965114472 @default.
• W1965114472 citedByCount "0" @default.
• W1965114472 crossrefType "journal-article" @default.
• W1965114472 hasAuthorship W1965114472A5064193477 @default.
• W1965114472 hasAuthorship W1965114472A5066947087 @default.
• W1965114472 hasAuthorship W1965114472A5077107046 @default.
• W1965114472 hasConcept C120665830 @default.
• W1965114472 hasConcept C121332964 @default.
• W1965114472 hasConcept C146599234 @default.
• W1965114472 hasConcept C154945302 @default.
• W1965114472 hasConcept C163716315 @default.
• W1965114472 hasConcept C196558001 @default.
• W1965114472 hasConcept C207857233 @default.
• W1965114472 hasConcept C2524010 @default.
• W1965114472 hasConcept C28719098 @default.
• W1965114472 hasConcept C31972630 @default.
• W1965114472 hasConcept C33923547 @default.
• W1965114472 hasConcept C41008148 @default.
• W1965114472 hasConcept C62520636 @default.
• W1965114472 hasConcept C97355855 @default.
• W1965114472 hasConceptScore W1965114472C120665830 @default.
• W1965114472 hasConceptScore W1965114472C121332964 @default.
• W1965114472 hasConceptScore W1965114472C146599234 @default.
• W1965114472 hasConceptScore W1965114472C154945302 @default.
• W1965114472 hasConceptScore W1965114472C163716315 @default.
• W1965114472 hasConceptScore W1965114472C196558001 @default.
• W1965114472 hasConceptScore W1965114472C207857233 @default.
• W1965114472 hasConceptScore W1965114472C2524010 @default.
• W1965114472 hasConceptScore W1965114472C28719098 @default.
• W1965114472 hasConceptScore W1965114472C31972630 @default.
• W1965114472 hasConceptScore W1965114472C33923547 @default.
• W1965114472 hasConceptScore W1965114472C41008148 @default.
• W1965114472 hasConceptScore W1965114472C62520636 @default.
• W1965114472 hasConceptScore W1965114472C97355855 @default.
• W1965114472 hasLocation W19651144721 @default.
• W1965114472 hasOpenAccess W1965114472 @default.
• W1965114472 hasPrimaryLocation W19651144721 @default.
• W1965114472 hasRelatedWork W1974109693 @default.
• W1965114472 hasRelatedWork W1988291364 @default.
• W1965114472 hasRelatedWork W2022764115 @default.
• W1965114472 hasRelatedWork W2047598546 @default.
• W1965114472 hasRelatedWork W2052882438 @default.
• W1965114472 hasRelatedWork W2076524796 @default.
• W1965114472 hasRelatedWork W2087042717 @default.
• W1965114472 hasRelatedWork W2087522125 @default.
• W1965114472 hasRelatedWork W2090683887 @default.
• W1965114472 hasRelatedWork W2125046553 @default.
• W1965114472 hasRelatedWork W2324327557 @default.
• W1965114472 hasRelatedWork W2355360478 @default.
• W1965114472 hasRelatedWork W2795174555 @default.
• W1965114472 hasRelatedWork W2969178272 @default.
• W1965114472 hasRelatedWork W2980551639 @default.
• W1965114472 hasRelatedWork W3031567601 @default.
• W1965114472 hasRelatedWork W3153556558 @default.
• W1965114472 hasRelatedWork W3154702291 @default.
• W1965114472 hasRelatedWork W2741898218 @default.
• W1965114472 hasRelatedWork W3001408139 @default.
• W1965114472 isParatext "false" @default.
• W1965114472 isRetracted "false" @default.
• W1965114472 magId "1965114472" @default.
• W1965114472 workType "article" @default.