Refinement of field-measured velocity profiles via CFD comparison: A case study on single-phase flow in aeration tanks

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dc.authorid0000-0002-4767-6660
dc.contributor.authorCelik, Damla Yilmaz
dc.contributor.authorVaheddoost, Babak
dc.contributor.authorAras, Egemen
dc.contributor.authorSibil, Rahim
dc.date.accessioned2026-02-08T15:15:13Z
dc.date.available2026-02-08T15:15:13Z
dc.date.issued2026
dc.departmentBursa Teknik Üniversitesi
dc.description.abstractThe accuracy of field measurements obtained from aeration tanks is of critically important for the validation of Computational Fluid Dynamics (CFD) models. In many cases, the employed validation metrics serve as a fundamental keystone for evaluating both the credibility of experimental data and the accuracy of numerical simulations. In this study, a novel data refinement approach is developed to assess the physical plausibility of velocity measurements collected from a full-scale aeration tank. Unlike conventional validation approaches, the CFD model is utilized as a reference framework within a reverse-approach perspective to evaluate the reliability of field data. Measurement points affected by acoustic noise, surface sludge interference, and turbulence near static structures were identified and excluded through curve-fitting and statistical filtering techniques. Velocity data obtained with the help of an Acoustic Doppler Current Profiler (ADCP) across six lateral and 53 vertical layers were evaluated using the Coefficient of Determination (R2), Relative Error (RE), and Performance Index (PI) metrics. The maximum-elimination combined with polynomial fitting notably enhanced the model accuracy, reducing RE from -123 % to 20 %, increasing R2 from 0.054 to 0.96, and improving PI from 2.6 to 1.16. As a result, the refined dataset provided a more consistent and realistic representation of the flow structure and established a robust observational basis for the future calibration.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [124M962]
dc.description.sponsorshipThis work was funded by Scientific and Technological Research Council of Turkey (TUBITAK) (Project number: 124M962) .
dc.identifier.doi10.1016/j.flowmeasinst.2025.103154
dc.identifier.issn0955-5986
dc.identifier.issn1873-6998
dc.identifier.scopus2-s2.0-105025197370
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.flowmeasinst.2025.103154
dc.identifier.urihttps://hdl.handle.net/20.500.12885/5672
dc.identifier.volume108
dc.identifier.wosWOS:001638894300001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofFlow Measurement and Instrumentation
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzWOS_KA_20260207
dc.subjectCurve fitting
dc.subjectData elimination
dc.subjectaeration tanks
dc.subjectADCP
dc.titleRefinement of field-measured velocity profiles via CFD comparison: A case study on single-phase flow in aeration tanks
dc.typeArticle

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