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Vortex imaging using two-dimensional ultrasonic speckle correlation
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-6216-6132
Laboratoire Ondes et Acoustique, Paris.
Laboratoire Ondes et Acoustique, Paris.
Laboratoire Ondes et Acoustique, Paris.
2001 (English)In: Proceedings: 2001 IEEE Ultrasonics Symposium : October 7 - 10, 2001, Omni Hotel, Atlanta, Geo / [ed] Donald E. Yuhas, Piscataway, NJ: IEEE Communications Society, 2001, 559-562 p.Conference paper, Published paper (Refereed)
Abstract [en]

In previous work, it has been shown that ultrasonic speckle velocimetry can be used to measure local particle velocities in flows. So far the technique has been applied to monitor stationary processes. In this paper, we show how ultrasonic speckle velocimetry can be used to dynamically map the two-dimensional velocity profiles of vortices caused by an obstacle within a flow. Thanks to the great versatility of our multi-channel system, it is possible to capture as much as 5000 images per second, thus enabling us to monitor very fast moving processes. To date, two transducer arrays are used to estimate the 2D motion vector of local particles. We also discuss possible modifications and improvements of the system that could lead to the use of a single array of transducers to dynamically map the vectorial velocity fields of flows

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2001. 559-562 p.
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-27873DOI: 10.1109/ULTSYM.2001.991684Local ID: 171bccd0-69d5-11db-8cbe-000ea68e967bISBN: 0-7803-7177-1 (print)OAI: oai:DiVA.org:ltu-27873DiVA: diva2:1001064
Conference
IEEE Ultrasonics Symposium : 07/10/2001 - 10/10/2001
Note
Godkänd; 2001; 20061101 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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