Print Email Facebook Twitter X-ray computed tomography of cavitating flow in a converging-diverging nozzle Title X-ray computed tomography of cavitating flow in a converging-diverging nozzle Author Jahangir, S. (TU Delft Fluid Mechanics) Wagner, E.C. (TU Delft ChemE/Afdelingsbureau) Mudde, R.F. (TU Delft Executive board; TU Delft ImPhys/Imaging Physics) Poelma, C. (TU Delft Multi Phase Systems) Contributor Katz, Joseph (editor) Department Executive board Date 2018 Abstract Cavitation is a complex multiphase phenomenon, where the production of vapor bubbles leads to opaqueness of the flow. While it is nearly impossible to visualize the interior of the cavitation region with visible light, we show that with X-ray computed tomography it is possible to obtain the time-averaged void fraction distribution in an axisymmetric converging-diverging nozzle (venturi). This technique is based on the amount of energy absorbed by the material, based on its density and thickness. Time-averaged 3D reconstruction of the X-ray images is used (i) to distinguish between vapor and liquid phase, (ii) to get radial geometric features of the flow, and (iii) to quantify the local void fraction. The results show the presence of intense cavitation at the walls of the venturi, and the vapor fraction decreases downstream of the venturi with the vapor cloud. Subject venturiX-ray computed tomographycloud cavitation To reference this document use: http://resolver.tudelft.nl/uuid:579c7b20-f338-4c1d-91c7-62edc7a77798 DOI https://doi.org/10.1115/1.861851_ch209 Publisher ASME, New York, NY, USA Embargo date 2018-11-14 ISBN 978-0-7918-6185-1 Source Proceedings of the 10th International Symposium on Cavitation (CAV2018) Event CAV2018: 10th International Symposium on Cavitation, 2018-05-14 → 2018-05-16, Baltimore, United States Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type conference paper Rights © 2018 S. Jahangir, E.C. Wagner, R.F. Mudde, C. Poelma Files PDF Paper.pdf 3.42 MB Close viewer /islandora/object/uuid:579c7b20-f338-4c1d-91c7-62edc7a77798/datastream/OBJ/view