Abstract
A new method is introduced for the analysis of LDA and PDA optical setups, especially suited for larger particles or bubbles. The properties of an optical setup are studied for a specific particle size in an effective control volume defined as the Locus of the Centres of the particles producing interference signals. The effect of the particle size on the size and position of such a control volume are evaluated and discussed. The convenient description using control volume fringes is adapted to suit larger particles and used to derive the equations of LDA and PDA measurements. The method sets new standards for the estimation of the active control volume as a function of the particle size, for dispersed two phase flows measurements.
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References
Aizu, Y., Durst, F., Grehan, G., Onofri, F. & Xu, T.–H. 1993, PDA-System without Gaussian Beam Defects, 3rd Intl. Cong. Optical Particle Sizing, Yokohama, Japan, pp.461–470.
Bachalo, W.D. 1987, The Evolution of Particle Size and Velocity Measurement Technology, 2nd Intl. Conf. on Laser Anemometry-Advances and Applications, Strathclyde, UK, pp. 79–99.
Bauckhage, K. 1988, The Phase Doppler Difference Method, a New Laser-Doppler Technique for Simultaneous Size and Velocity Measurements, Part 1: Description of the method, Part. Part. Syst. Charact., Vol. 5, pp. 16–22.
Grehan, G., Gouesbet, G., Naqwi, A. & Durst, F. 1992, On Elimination of the Trajectory Effects in Phase Doppler System, 5th Eur. Symp. Particle Caracterization (PARTEC 92), Nuremberg, Germany, pp. 309–318.
Grehan, G., Onofri, F., Cirasole, T., Gouesbet, G., Durst, F. & Tropea, C. 1994, Measurements of Bubbles by Phase Doppler Technique and Trajectory Ambiguity, 7th Intl. Symp. on Applications of. Laser Techniques to Fluid Mechanics, Lisbon, Portugal, vol. 1, paper 18.2.
Hardalupas, Y. & Taylor, A. M. K. P. 1989., On the Measurement of Particle Concentration Near a Stagnation Point, Experiments in Fluids, Vol. 8, pp. 113–118.
Saffman, M. 1987, Optical Particle Sizing Using the Phase of LDA Signals, Dantec Information, No. 05, pp. 8–13.
Sankar, S. V. & Bachalo, W. D. 1991, Response Characteristics of the Phase-Doppler Particle Analyzer for Sizing Spherical Particles Larger than the Wavelength, Applied Optics, Vol. 30, pp. 1487–1496.
Sommerfeld, M. & Qiu, H.–H. 1995, Particle Concentration Measurements by Phase- Doppler Anemometry in Complex Dispersed Two-Phase Flows, Experiments in Fluids, Vol. 18, pp. 187–198.
Tropea, C., Xu, T.–H., Onofri, F., Grehan, G., Haugen, P. & Stieglmeier, M. 1995, Dual Mode Phase-Doppler Anemometer., 4th Intl. Congress Optical Particle, Pre-prints, pp. 287–296.
Van de Hulst, H. C. 1981, Light Scattering by Small Particles, Dover, New York.
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© 1997 Springer-Verlag Berlin Heidelberg
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Panidis, T., Sommerfeld, M. (1997). The Locus of Centres Method for LDA and PDA Measurements. In: Adrian, R.J., Durão, D.F.G., Durst, F., Heitor, M.V., Maeda, M., Whitelaw, J.H. (eds) Developments in Laser Techniques and Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-60911-4_13
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DOI: https://doi.org/10.1007/978-3-642-60911-4_13
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