Two different optical techniques are applied to the measurement of the acoustic particle velocity in velocity fields. Firstly, the measurement of both the acoustic particle velocity and the mean flow velocity using Laser Doppler Anemometry is described. Secondly, the Particle Image Velocimetry method is investigated to determine the possibility of measuring the acoustic particle velocity and then both the acoustic particle velocity and the mean flow velocity. For the first case, consideration is given to the conditions necessary to obtain both of these parameters. The theory was then developed to allow the analysis of the Laser Doppler Anemometry signal. Experiments are then described which test the technique and some successful measurements are made. In the second case, the conditions for the use of Particle Image Velocimetry is discussed and the theory is developed. The theory is compared against computationally constructed images in order to test the range and accuracy of the possible ways of doing the measurement. Experiments are then done which show that the measured values agree well with the Theory.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:652067 |
| Date | January 1995 |
| Creators | Hann, David Brian |
| Publisher | University of Edinburgh |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Source | http://hdl.handle.net/1842/14985 |
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