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Modular ultrasound platform for flow mapping in magnetohydrodynamics

Modulare Ultraschall-Plattform für Strömungsvisualisierungen in der Magnetohydrodynamik
Kevin Mäder

Kevin Mäder studies mechatronics at TU Dresden. Currently he is writing his diploma thesis on software development for the PAUDV at the Laboratory for Measurement and Sensor System Techniques at TU Dresden.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

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, Richard Nauber

Richard Nauber studied mechatronics at TU Dresden and is research assistant at the Laboratory for Measurement and Sensor System Techniques at TU Dresden. His main research interests are development and application of ultrasound-based flow instrumentation.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

, Hannes Beyer

Hannes Beyer studies electrical engineering at TU Dresden. Currently he is writing his diploma thesis on hardware development for the PAUDV at the Laboratory for Measurement and Sensor System Techniques at TU Dresden.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

, Arne Klaß

Arne Klaß studies electrical engineering at TU Dresden. He completed his student research project on hardware development for the PAUDV at the Laboratory for Measurement and Sensor System Techniques at TU Dresden.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

, Norman Thieme

Norman Thieme studied electrical engineering at TU Dresden. Currently he is a research assistant at the Laboratory for Measurement and Sensor System Techniques at TU Dresden. His main research interests are ultrasound flow mapping and magnetohydrodynamics.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

, Lars Büttner

Lars Büttner studied physics at TU Clausthal and gained his doctoral degree in 2004 from Leibniz University of Hannover while he was research assistant at Laser Zentrum Hannover e. V. Since 2005 he is senior scientific assistant and head of the flow measurement technology working group at the Laboratory for Measurement and Sensor System Techniques at TU Dresden. He has been awarded a Leibinger Innovation Prize in 2008. In cooperation with a company he has transferred a high-resolution laser sensor to the market. His research activities focus on the development of novel flow metrology using laser or ultrasound technology.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

and Jürgen Czarske

Jürgen Czarske studied electrical engineering and physics at Leibniz University of Hannover, where he also gained his doctoral degree in 1995 and his venia legendi in 2003. Since 2004 he is professor at TU Dresden. Prof. Czarske is the first recipient of the prestigious Reinhart Koselleck grant in system engineering by the German Research Foundation (DFG) in 2014. Among other awards he has received an international Leibinger Innovation Prize in 2008. His main research interests are adaptive laser systems, information engineering, ultrasound flow mapping, turbulent flow measurements and production metrology. He is senior member of IEEE (Institute of Electrical and Electronics Engineers) and SPIE (The International Society for Optics and Photonics).

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

From the journal tm - Technisches Messen

Abstract

Flow control based on time-dependent magnetic fields is used in various industrial processes involving liquid metals, i. e. during the solidification process of silicon to improve the quality and efficiency of wafers. In order to investigate the interactions between spatiotemporal-varying magnetic fields and conductive fluids numerical simulations are performed. The numerical models are verified by model experiments with opaque low-melting alloys. A suitable measurement technique for flow mapping in such model experiments is ultrasound Doppler velocimetry. In contrast to conventional systems employing transducers with fixed sound field our approach is to use a phased array with the ability to focus and steer its acoustic field. We present the Phased Array Ultrasound Doppler Velocimeter (PAUDV) for flow mapping in magnetohydrodynamics. With its custom host software for control and signal processing experiments that are flexible regarding the experimental setup can be defined.

Zusammenfassung

In einer Vielzahl industrieller Prozesse werden Strömungen flüssiger Metalle oder Halbleiter unter Verwendung von äußeren Magnetfeldern gezielt beeinflusst, um die Qualität und Effizienz zu erhöhen. Zur Untersuchung der Wechselwirkungen zwischen örtlich- und zeitlich-veränderlichen Magnetfeldern und elektrisch leitfähigen Schmelzen werden numerische Simulationen und Modelexperimente durchgeführt. Für Letztere stellt die Ultraschall-Doppler-Velozimetrie ein geeignetes Messverfahren dar. Im Gegensatz zu konventionellen Systemen, welche Wandler mit einem festen Schallfeld verwenden, nutzen wir ein Phased Array zum dynamischen Fokussieren und Schwenken des Schallfeldes. Mit dem Phased-Array-Ultraschall-Doppler-Velozimeter präsentieren wir ein modulares Strömungsmesssystem für die Magnetohydrodynamik. Mithilfe der selbstentwickelten Hostsoftware für die Ansteuerung und Signalverarbeitung kann das Messsystem flexibel an das Experiment angepasst werden.

About the authors

Kevin Mäder

Kevin Mäder studies mechatronics at TU Dresden. Currently he is writing his diploma thesis on software development for the PAUDV at the Laboratory for Measurement and Sensor System Techniques at TU Dresden.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

Richard Nauber

Richard Nauber studied mechatronics at TU Dresden and is research assistant at the Laboratory for Measurement and Sensor System Techniques at TU Dresden. His main research interests are development and application of ultrasound-based flow instrumentation.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

Hannes Beyer

Hannes Beyer studies electrical engineering at TU Dresden. Currently he is writing his diploma thesis on hardware development for the PAUDV at the Laboratory for Measurement and Sensor System Techniques at TU Dresden.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

Arne Klaß

Arne Klaß studies electrical engineering at TU Dresden. He completed his student research project on hardware development for the PAUDV at the Laboratory for Measurement and Sensor System Techniques at TU Dresden.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

Norman Thieme

Norman Thieme studied electrical engineering at TU Dresden. Currently he is a research assistant at the Laboratory for Measurement and Sensor System Techniques at TU Dresden. His main research interests are ultrasound flow mapping and magnetohydrodynamics.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

Lars Büttner

Lars Büttner studied physics at TU Clausthal and gained his doctoral degree in 2004 from Leibniz University of Hannover while he was research assistant at Laser Zentrum Hannover e. V. Since 2005 he is senior scientific assistant and head of the flow measurement technology working group at the Laboratory for Measurement and Sensor System Techniques at TU Dresden. He has been awarded a Leibinger Innovation Prize in 2008. In cooperation with a company he has transferred a high-resolution laser sensor to the market. His research activities focus on the development of novel flow metrology using laser or ultrasound technology.

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

Jürgen Czarske

Jürgen Czarske studied electrical engineering and physics at Leibniz University of Hannover, where he also gained his doctoral degree in 1995 and his venia legendi in 2003. Since 2004 he is professor at TU Dresden. Prof. Czarske is the first recipient of the prestigious Reinhart Koselleck grant in system engineering by the German Research Foundation (DFG) in 2014. Among other awards he has received an international Leibinger Innovation Prize in 2008. His main research interests are adaptive laser systems, information engineering, ultrasound flow mapping, turbulent flow measurements and production metrology. He is senior member of IEEE (Institute of Electrical and Electronics Engineers) and SPIE (The International Society for Optics and Photonics).

Laboratory for Measurement and Sensor System Techniques, Technische Universität Dresden

Acknowledgement

The authors like to thank the Deutsche Forschungsgemeinschaft (DFG) for the funding received within the grant DFG BU 2241/2-1. Furthermore we thank Sonaxis SA (Besançon, France) for the efforts manufacturing the custom ultrasound transducer.

Received: 2015-8-21
Accepted: 2015-9-23
Published Online: 2015-10-28
Published in Print: 2015-11-28

©2015 Walter de Gruyter Berlin/Boston

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