Planar Doppler velocimetry measurements of flows using imaging fibre bundles

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dc.contributor.authorNobes, David S.
dc.contributor.authorFord, Helen D.
dc.contributor.authorTatam, Ralph P.
dc.date.accessioned2017-06-22T13:48:48Z
dc.date.available2017-06-22T13:48:48Z
dc.date.issued2003-08-03
dc.description.abstractThe development of a planar Doppler velocimetry is described. The technique is capable of measuring the three, instantaneous components of velocity in two dimensions using a single pair of signal and reference cameras. PDV can be used to measure the instantaneous 3-D velocity of a fluid by using an absorption line filter (ALF) to determine the Doppler shifted frequency of a narrow line pulsed laser (Nd:YAG) that has been scattered off particles seeded into the flow. The velocity of the fluid is determined using the Doppler formula and is dependent on the laser direction and the viewing direction. Hence, only one velocity component of the flow is measured. This component can be measured in two spatial dimensions using an array detector such as a CCD camera. To capture the three components, three such measurement heads have been used viewing from different angles. In the technique presented here the three views are ported from the collection optics to a single imaging plane using flexible fibre imaging bundles. These are made up of a coherent array of single fibres and are combined at one end as the input plane to the measurement head. The paper discusses the issues involved in developing a full three-dimensional velocity measurement system.en_UK
dc.identifier.citationDavid S. Nobes, Helen D. Ford and Ralph P. Tatamen_UK
dc.identifier.isbn0819450642
dc.identifier.issn0277-786X
dc.identifier.urihttp://dx.doi.org/10.1117/12.505842
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12096
dc.language.isoenen_UK
dc.publisherSPIE - International Society for Optics and Photonicsen_UK
dc.rightsCopyright © 2003 Society of Photo-Optical Instrumentation Engineers. This paper is made available with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI:10.1117/12.505842
dc.subjectPlanar Doppler velocimetryen_UK
dc.subjectimaging fibre bundlesen_UK
dc.subjectlow velocity measurementen_UK
dc.titlePlanar Doppler velocimetry measurements of flows using imaging fibre bundlesen_UK
dc.typeConference paperen_UK

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