- Tytuł:
- Measurement of flow parameters in a Taylor-Couette configuration using UDV measurement technology
- Autorzy:
-
Meironke, Heiko
Klembt, Daniel - Powiązania:
- https://bibliotekanauki.pl/articles/95311.pdf
- Data publikacji:
- 2019
- Wydawca:
- Politechnika Koszalińska. Wydawnictwo Uczelniane
- Tematy:
-
ultrasonic doppler velocimetry
laser doppler anemometry
Taylor-Couette flow
welocymetria dopplerowska
anemometria laserowa dopplerowska
przepływ Taylora-Couette'a - Opis:
- 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.
- Źródło:
-
Journal of Mechanical and Energy Engineering; 2019, 3, 3; 259-266
2544-0780
2544-1671 - Pojawia się w:
- Journal of Mechanical and Energy Engineering
- Dostawca treści:
- Biblioteka Nauki
Artykuł