Measurement of flow parameters in a Taylor-Couette configuration using UDV measurement technology

• Autorzy: Meironke Heiko , Klembt Daniel

Identyfikatory

DOI

10.30464/jmee.2019.3.3.259

• Języki publikacji: EN

Abstrakty

EN

In the context of the investigations of multiphase flows, e.g. in cooperation with the local brewery, the convective transport phenomena during the fermentation are investigated. Due to the strong turbidity of the medium, the measurement of velocity profiles is complicated. The difficulties of an investigation with a biological fermentation fluid are the many complex interactions between the different three phases (solid, gas, liquid). Furthermore, natural convection processes are superimposed by rising gas bubbles and the high turbidity of the fluid only allow an acoustic velocity measurement. This leads to high requirements for the measurement technology and the following evaluation. In previous investigation, ultrasonic transducers are used for the non-contact determination of velocity fields in fluids. The results of these past projects show that the measurement signals of the ultrasonic transducers used can be influenced by many factors. In order to verify the results of the transducers and to investigate the existing uncertainties, a flow configuration with a relatively stable reproducible flow pattern is required. In this study, a calibration system for ultrasonic transducers is developed, manufactured and validated by means of optical measurement technology such as the LDA. The experimental setup in this study produces a constantly reproducible Taylor Couette fluid flow. Geoffrey I. Taylor observed in 1923 that at a certain Reynolds number regular ring vortices are superimposed on the base flow. Along the axis, these vortices occur at the same distance, but with an alternating sense of rotation. Finally, a measurement using Ultrasonic Doppler Velocimetry in a model fluid will be compared with an optical measurement technique.

Słowa kluczowe

EN

ultrasonic doppler velocimetry; laser doppler anemometry; Taylor-Couette flow

PL

welocymetria dopplerowska; anemometria laserowa dopplerowska; przepływ Taylora-Couette'a

• Wydawca: Wydawnictwo Uczelniane Politechniki Koszalińskiej
• Czasopismo: Journal of Mechanical and Energy Engineering
• Rocznik: 2019
• Tom: Vol. 3, No 3
• Strony: 259--266
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., rys.

Twórcy

autor

Meironke Heiko

• Faculty of Mechanical Engineering, Department of Fluid Mechanics and Apparatus Engineering, University of Applied Science Stralsund, Zur Schwedenschanze 15, 18435, Stralsund, Germany

autor

Klembt Daniel

• Faculty of Mechanical Engineering, Department of Fluid Mechanics and Apparatus Engineering, University of Applied Science Stralsund, Zur Schwedenschanze 15, 18435, Stralsund, Germany

Bibliografia

• 1. Klembt D., Meironke H. (2018) Experimental investigations of the influence of different bottom shapes on the temperature and velocity fields in a fermentation tank with a biological multiphase flow, In Proceedings 11. International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering, Berlin.
• 2. Meironke H., Klembt D., Panten T. (2017). Untersuchungen zum Einfluss von Gasblasen auf die Ultraschall-Doppler-Messtechnik mittels optischer und numerischer Methoden, In: B. Ruck, C. Gromke, A. Leder, D. Dopheide (ed.), Lasermethoden in der Strömungsmesstechnik, 25. Fachtagung der GALA e.V., Karlsruhe, ISBN 978-3-9816764-3-3, pp. 45.1–45.8
• 3. Klembt D., Meironke H., Pommer E.: Untersuchungen zum Einfluss von Blasensäulen auf die Ultraschall Doppler Messtechnik, In: S. Grundmann, M. Brede, B. Ruck, A. Leder, D. Dopheide (ed.), Lasermethoden in der Strömungsmesstechnik, 26. Fachtagung der GALA e.V., Rostock, ISBN 978-3-9816764-5-7, pp. 7.1–7.8
• 4. Klembt D., Meironke H., Delgado A. (2019). Untersuchungen zum Einfluss von Blasenschwärmen und -säulen auf die Ultraschall Doppler Messtechnik, in: A. Delgado, B. Ruck, D. Dopheide (ed.), Lasermethoden in der Strömungsmesstechnik, 27. Fachtagung der GALA e.V., Erlangen.
• 5. Taylor G. I. (1923). Stability of a Viscous Liquid Contained between Two Rotating Cylinders, Vol. 223. London: The Royal Society of London, pp. 289-343.
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).