Measuring 3D Velocity Vectors using the Transverse Oscillation Method

Michael Johannes Pihl, Jørgen Arendt Jensen

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Abstract

Experimentally obtained estimates of threedimensional (3D) velocity vectors using the 3D Transverse Oscillation (TO) method are presented. The method employs a 2D transducer and synthesizes two double-oscillating fields in receive to obtain the axial, transverse, and elevation velocity components simultaneously. Experimental data are acquired using the ultrasound research scanner SARUS. The double-oscillating TO fields are investigated in an experimental scanning tank setup. The results demonstrate that the created fields only oscillate in the axial plus either the transverse or the elevation direction. Velocity measurements are conducted in an experimental flow-rig with steady flow in two different directions (mainly in x or y direction). Velocity estimates are obtained along the z axis. All three velocity components (vx, vy, vz) are measured with relative biases and standard deviations (normalized to expected value) below 5% and 12%, respectively. For an expected velocity magnitude of 25.2 cm/s, the method estimates 24.4±3.1 cm/s and 25.1±1.9 cm/s for the two directions. Under similar conditions, Field II simulations yield 25.1±1.5 cm/s and 25.4±1.6 cm/s. The experimental results validate the results obtained through simulations and verify that the 3D TO method estimates the full 3D velocity vectors simultaneously as well as the correct velocity magnitudes.
Original languageEnglish
Title of host publicationProceedings of IEEE International Ultrasonics Symposium
PublisherIEEE
Publication date2012
Pages1881-1885
ISBN (Print)9781467345613
DOIs
Publication statusPublished - 2012
Event2012 IEEE International Ultrasonics Symposium - The International Congress Center, Dresden, Germany
Duration: 7 Oct 201210 Oct 2012
https://ius2012.ifw-dresden.de

Conference

Conference2012 IEEE International Ultrasonics Symposium
LocationThe International Congress Center
CountryGermany
CityDresden
Period07/10/201210/10/2012
Internet address

Keywords

  • Estimation
  • Standards
  • Transducers
  • Ultrasonic imaging
  • Ultrasonic variables measurement
  • Vectors
  • Velocity measurement

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