Ultrasound image velocimetry for rheological measurements

Journal article (2016)

Authors

A. Gurung Fluid Mechanics - Mechanical, Maritime and Materials Engineering

J.W. Haverkort Shell Global Solutions International B.V.

S. Drost University of Limerick

B. Norder ChemE/O&O groep - , ChemE/Chemical Engineering

J. Westerweel Fluid Mechanics - Mechanical, Maritime and Materials Engineering

C. Poelma Multi Phase Systems - Mechanical, Maritime and Materials Engineering

Research Group

Multi Phase Systems (Mechanical, Maritime and Materials Engineering) (TU Delft)

Ultrasound Rheology Ultrasound PIV

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Published Date

2016

Language

English

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Faculty

Mechanical, Maritime and Materials Engineering

Department

Process and Energy

Research Group

Multi Phase Systems

Abstract

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.