A novel method for determining two-dimensional velocity flowfields has been developed. The technique, two-color particle-image velocimetry (PIV), is similar to existing PIV techniques except that two different-color laser sources are used to form the light sheets required for exposing the position of particles in a seeded flowfield. A green-colored laser sheet (formed by a doubled Nd:YAG laser) and a red-colored laser sheet (formed by a Nd:YAG-pumped dye laser) are employed sequentially to expose the particle positions which are recorded on 35-mm color film. Analysis of the resulting images involves digitizing the exposed film with color filters to separate the green- and red-particle image fields and processing the digitized images with velocity-displacement software. The two-color PIV technique has the advantage that direction, as well as particle displacement, is uniquely determined because the green-particle image occurs before the red one by a known time increment. Velocity measurements utilizing the two-color PIV technique on a propane jet diffusion flame have been made and are discussed.
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ICALEO '89: Proceedings of the Materials Processing Conference
October 15–20, 1989
Orlando, Florida, USA
ISBN:
978-0-912035-39-0
PROCEEDINGS PAPER
Two-color particle velocimetry Available to Purchase
L. P. Goss;
L. P. Goss
Systems Research Laboratories, Inc., A Division of Arvin/Calspan
, 2800 Indian Ripple Road, Dayton, OH 45440-3696 USA
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M. E. Post;
M. E. Post
Systems Research Laboratories, Inc., A Division of Arvin/Calspan
, 2800 Indian Ripple Road, Dayton, OH 45440-3696 USA
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D. D. Trump;
D. D. Trump
Systems Research Laboratories, Inc., A Division of Arvin/Calspan
, 2800 Indian Ripple Road, Dayton, OH 45440-3696 USA
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B. Sarka
B. Sarka
Systems Research Laboratories, Inc., A Division of Arvin/Calspan
, 2800 Indian Ripple Road, Dayton, OH 45440-3696 USA
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Published Online:
October 01 1989
Citation
L. P. Goss, M. E. Post, D. D. Trump, B. Sarka; October 15–20, 1989. "Two-color particle velocimetry." Proceedings of the ICALEO '89: Proceedings of the Materials Processing Conference. ICALEO '89: Proceedings of the Optical Methods in Flow & Particle Diagnostics Conference. Orlando, Florida, USA. (pp. pp. 101-111). ASME. https://doi.org/10.2351/1.5058286
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