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Transactions of the Institute of Measurement and Control
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Flow imaging for multi-component flow measurement

A. Plaskowski, MSc, PhD

Department of Instrumentation and Analytical Science, UMIST, PO Box 88, Manchester M60 1QD

M.S. Beck, BSc, MSc, PhD, DSc, FlnstMC, FlnstP, FIEE, CEng

Department of Instrumentation and Analytical Science, UMIST, PO Box 88, Manchester M60 1QD

J.S. Krawaczynski, MSc

Department of Instrumentation and Analytical Science, UMIST, PO Box 88, Manchester M60 1QD

Multi-component flow measurement is of increasing importance for resource exploitation, energy conservation, and biochemical process applications. Conventional flowmeters which endeavour to average a property of the flow over the pipe cross-section are unsuitable for accurate measurement in the many cases where the component distribution is spatially and time varying in a statistically non-stationary manner. Flow imaging which, like medical tomographic imaging, gives a cross-sectional image of the component distribution leads to the possibility of a much more accurate measurement.

The paper describes the basic theory of flow imaging and the system arrangement necessary for its implementation. We also describe a specific arrangement using pulsed ultrasound echo transducers and an acoustic backprojection algorithm for image reconstruction. This shows that a 12-transducer view system can resolve a long single 6-mm diameter void parallel to the axis in a physical model corresponding to a liquid/gas flow in a 78-mm diameter pipe.

Transactions of the Institute of Measurement and Control, Vol. 9, No. 2, 108-112 (1987)
DOI: 10.1177/014233128700900207
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