Print Email Facebook Twitter A dot tracking algorithm to measure free surface deformations Title A dot tracking algorithm to measure free surface deformations Author Charruault, F.T. (TU Delft Fluid Mechanics) Greidanus, A.J. (TU Delft Fluid Mechanics) Breugem, W.P. (TU Delft Multi Phase Systems) Westerweel, J. (TU Delft Fluid Mechanics) Contributor Rösgen, Thomas (editor) Date 2018 Abstract The present study introduces an experimental technique based on a Free Surface-Synthetic Schlieren (FS-SS) method in order to characterize free surfaces subjected to strong deformations. Current synthetic Schlieren methods are based on local image correlation and thus limited to rather weak image deformations, implying that they can only resolve rather large surface wavelengths and limited wave amplitude. The present method is a substantial improvement that allows to measure much stronger image deformations, providing access to shorter surface wavelengths and larger amplitudes (i.e. larger surface curvatures). Subject Turbulent flowAir-water interfaceBackground oriented schlierenFree surface synthetic schlierenDICPTVDTAAir cavityCoating To reference this document use: http://resolver.tudelft.nl/uuid:fd79dc7b-92f3-4b2f-a5bd-e72db99e6037 DOI https://doi.org/10.3929/ethz-b-000279140 Publisher ETH Zürich, Zürich, Switserland Source Proceedings 18th International Symposium on Flow Visualization Event ISFV18: 18th International Symposium on Flow Visualization, 2018-06-26 → 2018-06-29, Zürich, Switzerland Part of collection Institutional Repository Document type conference paper Rights © 2018 F.T. Charruault, A.J. Greidanus, W.P. Breugem, J. Westerweel Files PDF Paper_042a.pdf 1.57 MB Close viewer /islandora/object/uuid:fd79dc7b-92f3-4b2f-a5bd-e72db99e6037/datastream/OBJ/view