Abstract
Ultrasound Imaging Velocimetry (UIV, also known as 'echo-PIV') has, since its introduction a decade ago, been regarded as a promising tool to characterize non-transparent flows. Prime application examples are particle-laden flows and (in vivo) blood flow. Virtually all studies so far have been validation/comparison studies in laminar flow. In this contribution, we show that the technique has matured to a state where also unsteady, turbulent flows can be characterized. We do this by performing measurements in a fully-developed (single-phase) turbulent pipe flow at a Reynolds number of 5300. The outcome agrees with literature data. Subsequently, we demonstrate that the technique can measure in the same flow, but now with a moderate volume fraction of particles; such flows are beyond the capabilities of conventional, optical techniques. This opens up a wide range of application areas, such as studies into turbulence modification and sediment transport.
Original language | English |
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Title of host publication | Proceedings of the 18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics |
Place of Publication | Lisboa, Portugal |
Publisher | Instituto Superior Técnico |
Number of pages | 5 |
ISBN (Electronic) | 978-989-98777-8-8 |
Publication status | Published - 2016 |
Event | 18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics - The Calouste Gulbenkian Foundation, Lisbon, Portugal Duration: 4 Jul 2016 → 7 Jul 2016 Conference number: 18 http://ltces.dem.ist.utl.pt/lxlaser/lxlaser2016/ |
Conference
Conference | 18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics |
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Country/Territory | Portugal |
City | Lisbon |
Period | 4/07/16 → 7/07/16 |
Internet address |
Keywords
- PIV
- ultrasound, turbulence
- two-phase flows