Ultrasound image velocimetry for rheological measurements

A. Gurung, J. W. Haverkort, S. Drost, B. Norder, J. Westerweel, C. Poelma

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)


Ultrasound image velocimetry (UIV) allows for the non-intrusive measurement of a wide range of flows without the need for optical transparency. In this study, we used UIV to measure the local velocity field of a model drilling fluid that exhibits yield stress flow behavior. The radial velocity profile was used to determine the yield stress and the Herschel-Bulkley model flow index n and the consistency index k. Reference data were obtained using the conventional offline Couette rheometry. A comparison showed reasonable agreement between the two methods. The discrepancy in model parameters could be attributed to inherent differences between the methods, which cannot be captured by the three-parameter model used. Overall, with a whole flow field measurement technique such as UIV, we were able to quantify the complex rheology of a model drilling fluid. These preliminary results show that UIV can be used as a non-intrusive diagnostic for in situ, real-time measurement of complex opaque flow rheology.

Original languageEnglish
Article number094008
Number of pages9
JournalMeasurement Science and Technology
Issue number9
Publication statusPublished - 2016


  • rheology
  • ultrasound
  • ultrasound PIV


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