| EPSRC Reference: |
GR/S04291/01 |
| Title: |
Two-frequency Planar Doppler Velocimetry |
| Principal Investigator: |
Tatam, Professor RP |
| Other Investigators: |
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| Researcher Co-Investigators: |
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| Project Partners: |
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| Department: |
Sch of Engineering |
| Organisation: |
Cranfield University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
02 June 2003 |
Ends: |
01 December 2006 |
Value (£): |
140,795
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| EPSRC Research Topic Classifications: |
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| EPSRC Industrial Sector Classifications: |
| Aerospace, Defence and Marine |
Energy |
| Transport Systems and Vehicles |
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Summary on Grant Application Form |
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This research proposal focuses on the development of a unique planar Doppler velocimetry (PDV) system that will measure a single component of velocity over a plane using a single CCD camera and two laser frequencies. PDV measures the velocity of particles seeded in a flow by illuminating a region of interest with a laser sheet at a known optical frequency and measuring the Doppler shift of the light scattered from the particles. The Doppler shift is measured using a frequency-to-intensity fitter that attenuates the scattered light intensity based on the optical frequency. The Doppler formula is then used to recover the velocity of the particle. The proposed PDV system will use two illumination sources tuned to different regions of the filter transfer function to generate both the Doppler signal image and a spatially coincident reference image. This two-frequency PDV system will use only a single CCD camera to image the light sheet. Strategic positioning of the optical frequencies on the absorption line will result in double the measurement sensitivity. The requirement for pixel-matching of the signal and reference images will be also eliminated. The project will focus on the use of dual laser frequencies in PDV, the measurement error and the development of strategies to increase the measurement resolution. Systems incorporating both cw argon-ion and pulsed Nd:YAG lasers will be investigated.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.cranfield.ac.uk |