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Medientyp: E-Artikel Titel: Two‐dimensional ultrasound Doppler velocimeter for velocity field measurements of liquid metal flows Beteiligte: Franke, Sven; Fischer, Andreas; Büttner, Lars; Czarske, Jürgen; Räbiger, Dirk; Eckert, Sven Erschienen: Wiley, 2011 Erschienen in: PAMM Sprache: Englisch DOI: 10.1002/pamm.201110314 ISSN: 1617-7061 Schlagwörter: General Medicine Entstehung: Anmerkungen: Beschreibung: <jats:title>Abstract</jats:title><jats:p>We present a novel fluid flow measurement system based on the pulsed‐wave ultrasound Doppler velocimetry being able to determine two‐dimensional velocity fields. It applies for the measurement of unsteady liquid metal flows driven by electromagnetic forces concerning the research field of magnetohydrodynamics. The application of advanced processing techniques enable high data acquisition rates and concurrently a high spatial resolution facilitating to resolve transient liquid metal flow structures which could not been acquired so far. An experimental setup utilizing liquid metal in a cubic vessel exposed to a stationary rotating magnetic field was used to validate the reliability of the measurement system. The swirling fluid motion in its horizontal section could be resolved into a velocity field grid of 24 × 24 vectors while achieving frame rates of about 30 fps. Results from a further study driving liquid metal in a cylindrical vessel by a pulsed rotating magnetic field are presented. (© 2011 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)</jats:p> Zugangsstatus: Freier Zugang