21 November 1997 Whole-field instantaneous 3D PIV measurement in air
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A 3D measurement is presented of both the in-plane and out- of-plane components of the flow field velocity of 0.5 micrometers styrene particles at 30 ms-1 in air from a calibrated nozzle by using a co-linear side scattering PIV approach. The light sheet used to illuminate the particles was generated using a Nd:YAG laser, operating in triple pulse mode. The scattered light from the particle was imaged through a near diffraction limited lens. The particle images have been analyzed from both their respective diffraction patterns and from their out of focus intensity profile. The authors show that the co-linear 3D PIV method can be used to determine the particle velocity in three directions. Results have been presented for different flow angles through a calibration 30ms-1 air jet, showing that it is possible to identify the particle position in three directions, within a turbulent flow, to a spatial accuracy of +/- 20 micrometers .
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Wing Kai A. Lee, L. S. Judge, Mark Burnett, Doina Daciana Udrea, Peter John Bryanston-Cross, "Whole-field instantaneous 3D PIV measurement in air", Proc. SPIE 3172, Optical Technology in Fluid, Thermal, and Combustion Flow III, (21 November 1997); doi: 10.1117/12.293411; https://doi.org/10.1117/12.293411

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