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Vortex imaging using two-dimensional ultrasonic speckle correlation
Luleå tekniska universitet, Institutionen för system- och rymdteknik, Signaler och system.ORCID-id: 0000-0002-6216-6132
Laboratoire Ondes et Acoustique, Paris.
Laboratoire Ondes et Acoustique, Paris.
Laboratoire Ondes et Acoustique, Paris.
2001 (engelsk)Inngår i: Proceedings: 2001 IEEE Ultrasonics Symposium : October 7 - 10, 2001, Omni Hotel, Atlanta, Geo / [ed] Donald E. Yuhas, Piscataway, NJ: IEEE Communications Society, 2001, s. 559-562Konferansepaper, Publicerat paper (Fagfellevurdert)
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

sted, utgiver, år, opplag, sider
Piscataway, NJ: IEEE Communications Society, 2001. s. 559-562
HSV kategori
Forskningsprogram
Signalbehandling
Identifikatorer
URN: urn:nbn:se:ltu:diva-27873DOI: 10.1109/ULTSYM.2001.991684Scopus ID: 2-s2.0-0035729029Lokal ID: 171bccd0-69d5-11db-8cbe-000ea68e967bISBN: 0-7803-7177-1 (tryckt)OAI: oai:DiVA.org:ltu-27873DiVA, id: diva2:1001064
Konferanse
IEEE Ultrasonics Symposium : 07/10/2001 - 10/10/2001
Merknad
Godkänd; 2001; 20061101 (ysko)Tilgjengelig fra: 2016-09-30 Laget: 2016-09-30 Sist oppdatert: 2018-07-10bibliografisk kontrollert

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