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A scalar concentration (Komori) probe for measuring fluctuating dye concentration in water

Madhani, Jehangir T. & Brown, Richard J. (2008) A scalar concentration (Komori) probe for measuring fluctuating dye concentration in water. WSEAS Transactions on Fluid Mechanics (special issue on "Energy and Environmental Fluid Mechanics), 3(3), pp. 224-233.

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Abstract

The scalar (dye) concentration probe of Komori has been used at QUT to measure the mixing and dispersion of pollutants in rivers from outboard motors and in a gross pollutant trap (GPT). Although usages have been documented in literature, little is known of the Komori (dye) probe’s frequency response characteristics and the quality of data sampled. In this work, the frequency response characteristic of the Komori probe is determined by injecting methylene blue dye over a range of water flow velocities. Despite some noise and drift, the data collected from the probe is useful because of its high frequency response in comparison to regular commercial concentration probes. The rise and fall times are reported and the theoretical response time is also determined. It is found that the frequency response is a strong function of flow velocity and a maximum of 100 Hz is noted under typical operating conditions. Comparison between rise and fall data show that the rise time is generally shorter than half the fall time.

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ID Code: 13436
Item Type: Journal Article
Additional Information: The contents of this journal can be freely accessed online via the journal's web page (see hypertext link).
Additional URLs:
Keywords: Concentration probe, dye measurement, frequency response, Komori probe, tracer, rise time and fall time
ISSN: 1790-5087
Subjects: Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > CLASSICAL PHYSICS (020300) > Fluid Physics (020303)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ENVIRONMENTAL ENGINEERING (090700)
Australian and New Zealand Standard Research Classification > TECHNOLOGY (100000)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > OTHER ENGINEERING (099900) > Engineering Instrumentation (099902)
Australian and New Zealand Standard Research Classification > PHYSICAL SCIENCES (020000) > OTHER PHYSICAL SCIENCES (029900) > Synchrotrons; Accelerators; Instruments and Techniques (029904)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > CIVIL ENGINEERING (090500)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2008 World Scientific and Engineering Academy and Society (WSEAS)
Deposited On: 13 May 2008
Last Modified: 29 Feb 2012 23:48

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